Câu hỏi trong đề: Bài tập Toán lớp 4 Phép nhân phân số có đáp án !!
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Giải bởi Vietjack
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\(\begin{array}{*{20}{c}}3\\\hline4\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{12}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline{11}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline6\end{array}{\rm{ = }}\begin{array}{*{20}{c}}2\\\hline{33}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{36}\end{array}\) |
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\(\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}9\\\hline{80}\end{array}\) |
\(\begin{array}{*{20}{c}}1\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}2\\\hline{45}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline3\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{ = }}\begin{array}{*{20}{c}}8\\\hline{21}\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline{11}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}8\\\hline{55}\end{array}\) |
\(\begin{array}{*{20}{c}}1\\\hline6\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{20}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline7\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}8\\\hline{63}\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}8\\\hline{45}\end{array}\) |
\(\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline7\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{70}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}2\\\hline{15}\end{array}\) |
|
\(\begin{array}{*{20}{c}}3\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}1\\\hline4\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{36}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline{35}\end{array}\) |
|
\(\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{16}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{11}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{35}\\\hline{99}\end{array}\) |
\(\begin{array}{*{20}{c}}1\\\hline3\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{27}\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline{63}\end{array}\) |
\(\begin{array}{*{20}{c}}5\\\hline{11}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{10}\\\hline{99}\end{array}\) |
\(\begin{array}{*{20}{c}}1\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline7\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{35}\end{array}\) |
|
\(\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline4\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{40}\end{array}\) |
\(\begin{array}{*{20}{c}}1\\\hline2\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline7\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline7\end{array}\) |
\[\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{11}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{33}\end{array}\] |
|
\(\begin{array}{*{20}{c}}1\\\hline6\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{48}\end{array}\) |
\(\begin{array}{*{20}{c}}3\\\hline7\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline{11}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}6\\\hline{77}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{18}\end{array}\) |
|
\(\begin{array}{*{20}{c}}2\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline7\end{array}{\rm{ = }}\begin{array}{*{20}{c}}6\\\hline{35}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline6\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{10}\\\hline{27}\end{array}\) |
\(\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{14}\end{array}\) |
|
\(\begin{array}{*{20}{c}}1\\\hline6\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline{11}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{12}\\\hline{55}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline4\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{18}\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline6\end{array}{\rm{ = }}\begin{array}{*{20}{c}}2\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline{11}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{44}\end{array}\) |
\(\begin{array}{*{20}{c}}5\\\hline{12}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{54}\end{array}\) |
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\[\begin{array}{*{20}{c}}1\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{11}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{55}\end{array}\] |
\(\begin{array}{*{20}{c}}1\\\hline3\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}1\\\hline7\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{56}\end{array}\) |
|
\(\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline4\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{32}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{20}\\\hline{63}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline5\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline{11}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{14}\\\hline{55}\end{array}\) |
|
\(\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline7\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{15}\\\hline{56}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline{45}\end{array}\) |
\(\begin{array}{*{20}{c}}5\\\hline{12}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}1\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{96}\end{array}\) |
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Sách thầy cô Vietjack biên soạn:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1
Lời giải
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\(\begin{array}{*{20}{c}}2\\\hline{11}\end{array}{\rm{ }} \times {\rm{ }}11{\rm{ = 2}}\) |
\(\begin{array}{*{20}{c}}7\\\hline{16}\end{array}{\rm{ }} \times {\rm{ }}8{\rm{ = }}\begin{array}{*{20}{c}}7\\\hline2\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline{17}\end{array}{\rm{ }} \times {\rm{ }}2{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline{17}\end{array}\) |
|
\(\begin{array}{*{20}{c}}6\\\hline{19}\end{array}{\rm{ }} \times {\rm{ }}2{\rm{ = }}\begin{array}{*{20}{c}}{12}\\\hline{19}\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline5\end{array}{\rm{ }} \times {\rm{ 3 = }}\begin{array}{*{20}{c}}{12}\\\hline5\end{array}\) |
\(\begin{array}{*{20}{c}}3\\\hline7\end{array}{\rm{ }} \times {\rm{ }}9{\rm{ = }}\begin{array}{*{20}{c}}{27}\\\hline7\end{array}\) |
|
\(\begin{array}{*{20}{c}}5\\\hline8\end{array}{\rm{ }} \times {\rm{ }}4{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline2\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline{10}\end{array}{\rm{ }} \times {\rm{ }}8{\rm{ = }}\begin{array}{*{20}{c}}{28}\\\hline5\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline5\end{array}{\rm{ }} \times {\rm{ }}6{\rm{ = }}\begin{array}{*{20}{c}}{12}\\\hline5\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline9\end{array}{\rm{ }} \times {\rm{ }}5{\rm{ = }}\begin{array}{*{20}{c}}{20}\\\hline9\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline{12}\end{array}{\rm{ }} \times {\rm{ }}6{\rm{ = }}\begin{array}{*{20}{c}}7\\\hline2\end{array}\) |
\(\begin{array}{*{20}{c}}5\\\hline6\end{array}{\rm{ }} \times {\rm{ }}9{\rm{ = }}\begin{array}{*{20}{c}}{15}\\\hline2\end{array}\) |
|
\(5{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline2\end{array}\) |
\(6{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}8\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{16}\\\hline3\end{array}\) |
\(8{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{12}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{10}\\\hline3\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline7\end{array}{\rm{ }} \times {\rm{ }}14{\rm{ = 8}}\) |
\(\begin{array}{*{20}{c}}2\\\hline3\end{array}{\rm{ }} \times {\rm{ }}9{\rm{ = 6}}\) |
\(5{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{10}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}9\\\hline2\end{array}\) |
|
\(\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{ }} \times {\rm{ }}12{\rm{ = }}\begin{array}{*{20}{c}}{20}\\\hline3\end{array}\) |
\(8{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{64}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline8\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline9\end{array}{\rm{ }} \times {\rm{ }}6{\rm{ = }}\begin{array}{*{20}{c}}{14}\\\hline3\end{array}\) |
|
\(15{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline5\end{array}{\rm{ = 6}}\) |
\(\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ }} \times {\rm{ }}24{\rm{ = 9}}\) |
\[18{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{36}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline2\end{array}\] |
|
\(\begin{array}{*{20}{c}}2\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}9{\rm{ = }}\begin{array}{*{20}{c}}2\\\hline3\end{array}\) |
\(\begin{array}{*{20}{c}}3\\\hline{50}\end{array}{\rm{ }} \times {\rm{ 1}}0{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline5\end{array}\) |
\(\begin{array}{*{20}{c}}5\\\hline{24}\end{array}{\rm{ }} \times {\rm{ }}12{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline2\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline{15}\end{array}{\rm{ }} \times {\rm{ }}5{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline3\end{array}\) |
\(4{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{16}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline4\end{array}\) |
\(\begin{array}{*{20}{c}}8\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}3{\rm{ = }}\begin{array}{*{20}{c}}8\\\hline9\end{array}\) |
|
\(\begin{array}{*{20}{c}}{15}\\\hline{32}\end{array}{\rm{ }} \times {\rm{ }}2{\rm{ = }}\begin{array}{*{20}{c}}{15}\\\hline{16}\end{array}\) |
\(\begin{array}{*{20}{c}}{21}\\\hline{50}\end{array}{\rm{ }} \times {\rm{ }}3{\rm{ = }}\begin{array}{*{20}{c}}{63}\\\hline{50}\end{array}\) |
\(\begin{array}{*{20}{c}}{27}\\\hline{64}\end{array}{\rm{ }} \times {\rm{ }}2{\rm{ = }}\begin{array}{*{20}{c}}{27}\\\hline{32}\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline{45}\end{array}{\rm{ }} \times {\rm{ }}18{\rm{ = }}\begin{array}{*{20}{c}}8\\\hline5\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline{85}\end{array}{\rm{ }} \times {\rm{ }}48{\rm{ = }}\begin{array}{*{20}{c}}{96}\\\hline{85}\end{array}\) |
\(\begin{array}{*{20}{c}}{22}\\\hline{63}\end{array}{\rm{ }} \times {\rm{ }}3{\rm{ = }}\begin{array}{*{20}{c}}{22}\\\hline{21}\end{array}\) |
|
\[\begin{array}{*{20}{c}}{16}\\\hline{33}\end{array}{\rm{ }} \times {\rm{ }}3{\rm{ = }}\begin{array}{*{20}{c}}{16}\\\hline{11}\end{array}\] |
\(\begin{array}{*{20}{c}}{35}\\\hline{84}\end{array}{\rm{ }} \times {\rm{ }}3{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline4\end{array}\) |
\(18{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{50}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{27}\\\hline{25}\end{array}\) |
|
\(3{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{47}\\\hline{96}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{47}\\\hline{32}\end{array}\) |
\(4{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{72}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{25}\\\hline{18}\end{array}\) |
\(\begin{array}{*{20}{c}}9\\\hline{20}\end{array}{\rm{ }} \times {\rm{ }}3{\rm{ = }}\begin{array}{*{20}{c}}{27}\\\hline{20}\end{array}\) |
|
\(2{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{26}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{13}\end{array}\) |
\(\begin{array}{*{20}{c}}8\\\hline{15}\end{array}{\rm{ }} \times {\rm{ }}2{\rm{ = }}\begin{array}{*{20}{c}}{16}\\\hline{15}\end{array}\) |
\(3{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{28}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}{39}\\\hline{28}\end{array}\) |
Câu 2
Lời giải
|
\(\begin{array}{*{20}{c}}5\\\hline{24}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{25}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{21}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{14}\end{array}\) |
\(\begin{array}{*{20}{c}}{11}\\\hline{30}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{22}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{20}\end{array}\) |
|
\(\begin{array}{*{20}{c}}6\\\hline{11}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{22}\\\hline{27}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline9\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline{11}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{11}\\\hline{28}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline4\end{array}\) |
\(\begin{array}{*{20}{c}}6\\\hline{13}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{26}\\\hline{27}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline9\end{array}\) |
|
\(\begin{array}{*{20}{c}}2\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline8\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{12}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{21}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline8\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}4\\\hline{21}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline6\end{array}\) |
|
\(\begin{array}{*{20}{c}}9\\\hline{26}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{27}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline6\end{array}\) |
\(\begin{array}{*{20}{c}}{10}\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{20}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{18}\end{array}\) |
\(\begin{array}{*{20}{c}}8\\\hline{15}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{10}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline{25}\end{array}\) |
|
\(\begin{array}{*{20}{c}}{20}\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{28}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{21}\end{array}\) |
\(\begin{array}{*{20}{c}}6\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline9\end{array}{\rm{ = }}\begin{array}{*{20}{c}}2\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline{24}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{20}\\\hline{21}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{18}\end{array}\) |
|
\(\begin{array}{*{20}{c}}4\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{16}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{20}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline3\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{15}\\\hline{22}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{11}\end{array}\) |
\(\begin{array}{*{20}{c}}{13}\\\hline{30}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{26}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{20}\end{array}\) |
|
\(\begin{array}{*{20}{c}}2\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{10}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}3\\\hline{14}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}7\\\hline{27}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{18}\end{array}\) |
\(\begin{array}{*{20}{c}}8\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline4\end{array}{\rm{ = }}\begin{array}{*{20}{c}}2\\\hline9\end{array}\) |
|
\(\begin{array}{*{20}{c}}7\\\hline{18}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{28}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{24}\end{array}\) |
\(\begin{array}{*{20}{c}}{13}\\\hline{21}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}3\\\hline{26}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{14}\end{array}\) |
\[\begin{array}{*{20}{c}}{16}\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{12}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline{15}\end{array}\] |
|
\(\begin{array}{*{20}{c}}{13}\\\hline{24}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{21}\\\hline{26}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}7\\\hline{16}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline6\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
\(\begin{array}{*{20}{c}}{11}\\\hline{20}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{22}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline8\end{array}\) |
|
\(\begin{array}{*{20}{c}}9\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{18}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}\) |
\(\begin{array}{*{20}{c}}2\\\hline{15}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{14}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{21}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline9\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{15}\\\hline{28}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{12}\end{array}\) |
|
\(\begin{array}{*{20}{c}}{13}\\\hline{15}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{26}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline6\end{array}\) |
\(\begin{array}{*{20}{c}}4\\\hline{15}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{28}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline{21}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline{10}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}2\\\hline{21}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{15}\end{array}\) |
|
\(\begin{array}{*{20}{c}}{14}\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}5\\\hline{28}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}\) |
\(\begin{array}{*{20}{c}}7\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{14}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline6\end{array}\) |
\(\begin{array}{*{20}{c}}{11}\\\hline{26}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{13}\\\hline{55}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}\) |
|
\[\begin{array}{*{20}{c}}4\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}9\\\hline{16}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{12}\end{array}\] |
\(\begin{array}{*{20}{c}}7\\\hline{16}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}8\\\hline{21}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline6\end{array}\) |
\(\begin{array}{*{20}{c}}{10}\\\hline{27}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}6\\\hline5\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline9\end{array}\) |
|
\(\begin{array}{*{20}{c}}{39}\\\hline{62}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{31}\\\hline{52}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline8\end{array}\) |
\(\begin{array}{*{20}{c}}{17}\\\hline{20}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{34}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}5\\\hline8\end{array}\) |
\(\begin{array}{*{20}{c}}{64}\\\hline{75}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{25}\\\hline{48}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}4\\\hline9\end{array}\) |
|
\(\begin{array}{*{20}{c}}7\\\hline{68}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{34}\\\hline{35}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}\) |
\(\begin{array}{*{20}{c}}{16}\\\hline{25}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{15}\\\hline{32}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}3\\\hline{10}\end{array}\) |
\(\begin{array}{*{20}{c}}9\\\hline{62}\end{array}{\rm{ }} \times {\rm{ }}\begin{array}{*{20}{c}}{31}\\\hline{45}\end{array}{\rm{ = }}\begin{array}{*{20}{c}}1\\\hline{10}\end{array}\) |
Câu 3
Lời giải
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Câu 4
Lời giải
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Câu 5
Lời giải
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Nhắn tin Zalo
Hỏi bài tập