Câu hỏi:

19/08/2025 21 Lưu

Điền dấu (>; <; =) thích hợp vào chỗ chấm:

\(850{\rm{c}}{{\rm{m}}^2}...12{\rm{d}}{{\rm{m}}^2}\)                               \(302{\rm{m}}{{\rm{m}}^2}...3{\rm{d}}{{\rm{m}}^2}2{\rm{m}}{{\rm{m}}^2}\)

\(3{{\rm{m}}^2}92{\rm{d}}{{\rm{m}}^2}...4{{\rm{m}}^2}\)                                      \(51{\rm{k}}{{\rm{m}}^2}...510{\rm{h}}{{\rm{m}}^2}\)

\(2015{{\rm{m}}^2}...2{\rm{h}}{{\rm{m}}^2}15{{\rm{m}}^2}\)                     \(32{\rm{k}}{{\rm{m}}^2}45{{\rm{m}}^2}...3200{\rm{h}}{{\rm{m}}^2}\)

\(67{\rm{ }}{{\rm{m}}^2}...6700{\rm{ c}}{{\rm{m}}^2}\)                                         \(27{\rm{ d}}{{\rm{m}}^2}34{\rm{ c}}{{\rm{m}}^2}...2734{\rm{c}}{{\rm{m}}^2}\)

\(573{\rm{ h}}{{\rm{m}}^2}...57{\rm{k}}{{\rm{m}}^2}\)                               \(34{\rm{d}}{{\rm{m}}^2}34{\rm{m}}{{\rm{m}}^2}...3434{\rm{c}}{{\rm{m}}^2}\)

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Trả lời:

verified Giải bởi Vietjack

\(850{\rm{c}}{{\rm{m}}^2} < 12{\rm{d}}{{\rm{m}}^2}\)\(12{\rm{d}}{{\rm{m}}^2} = 12 \times 100 = 1200{\rm{c}}{{\rm{m}}^2}\)

\(302{\rm{m}}{{\rm{m}}^2} < 3{\rm{d}}{{\rm{m}}^2}2{\rm{m}}{{\rm{m}}^2}\)\(3{\rm{d}}{{\rm{m}}^2}2{\rm{m}}{{\rm{m}}^2} = 30002{\rm{m}}{{\rm{m}}^2}\)

\(3{{\rm{m}}^2}92{\rm{d}}{{\rm{m}}^2} < 4{{\rm{m}}^2}\)\(4{{\rm{m}}^2} = 400{\rm{d}}{{\rm{m}}^2}\)\(3{{\rm{m}}^2}92{\rm{d}}{{\rm{m}}^2} = 392{\rm{d}}{{\rm{m}}^2}\)

\(51{\rm{k}}{{\rm{m}}^2} > 510{\rm{h}}{{\rm{m}}^2}\)\(51{\rm{k}}{{\rm{m}}^2} = 5100{\rm{h}}{{\rm{m}}^2}\)

\(2015{{\rm{m}}^2} < 2{\rm{h}}{{\rm{m}}^2}15{{\rm{m}}^2}\)\(2{\rm{h}}{{\rm{m}}^2}15{{\rm{m}}^2} = 20015{{\rm{m}}^2}\)

\(32{\rm{k}}{{\rm{m}}^2}45{{\rm{m}}^2} > 3200{\rm{h}}{{\rm{m}}^2}\)\(3200{\rm{h}}{{\rm{m}}^2} = 32{\rm{k}}{{\rm{m}}^2}\)

\(67{\rm{ }}{{\rm{m}}^2} > 6700{\rm{ c}}{{\rm{m}}^2}\)\(67{{\rm{m}}^2} = 670000{\rm{c}}{{\rm{m}}^2}\)

\(27{\rm{ d}}{{\rm{m}}^2}34{\rm{ c}}{{\rm{m}}^2} = 2734{\rm{c}}{{\rm{m}}^2}\)\(27{\rm{d}}{{\rm{m}}^2}34{\rm{c}}{{\rm{m}}^2} = 27{\rm{d}}{{\rm{m}}^2} + 34{\rm{c}}{{\rm{m}}^2} = 2700{\rm{c}}{{\rm{m}}^2} + 34{\rm{c}}{{\rm{m}}^2}\)

\(573{\rm{ h}}{{\rm{m}}^2} < 57{\rm{k}}{{\rm{m}}^2}\)\(57{\rm{k}}{{\rm{m}}^2} = 5700{\rm{h}}{{\rm{m}}^2}\)

\(34{\rm{d}}{{\rm{m}}^2}34{\rm{m}}{{\rm{m}}^2} < 3434{\rm{c}}{{\rm{m}}^2}\)\(3434{\rm{c}}{{\rm{m}}^2} = 3400{\rm{c}}{{\rm{m}}^2} + 34{\rm{c}}{{\rm{m}}^2} = 34{\rm{d}}{{\rm{m}}^2}34{\rm{c}}{{\rm{m}}^2}\)

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Lời giải

Hướng Dẫn Giải

Chú ý: Diện tích hình chữ nhật = chiều dài x chiều rộng.

Chiều rộng thửa ruộng là: \(\frac{2}{3} \times 120 = 80{\rm{ (m)}}\)

Diện tích thửa ruộng là: \(120 \times 80 = 9600{\rm{ (}}{{\rm{m}}^2}{\rm{)}}\)

Số tạ lúa thu được là: \(9600:150 \times 60 = 3840{\rm{ (kg)}} = 38,4{\rm{ (t?)}}\)

Đáp Số: 38,4 (tạ)

Lời giải

Hướng Dẫn Giải

\(14{\rm{da}}{{\rm{m}}^2} = 14 \times 100{\rm{ }}{{\rm{m}}^2} = 1400{{\rm{m}}^2}\)

\(1700{{\rm{m}}^2} = 1700:100{\rm{ da}}{{\rm{m}}^2} = 17{\rm{da}}{{\rm{m}}^2}\)

\(16{\rm{da}}{{\rm{m}}^2}10{{\rm{m}}^2} = 16{\rm{da}}{{\rm{m}}^2} + 10{{\rm{m}}^2} = 16 \times 100{{\rm{m}}^2} + 10{{\rm{m}}^2} = 1610{{\rm{m}}^2}\)

\(37{\rm{da}}{{\rm{m}}^2}9{{\rm{m}}^2} = 37{\rm{da}}{{\rm{m}}^2} + 9{{\rm{m}}^2} = 37 \times 100{{\rm{m}}^2} + 9{{\rm{m}}^2} = 3709{{\rm{m}}^2}\)

\(1{{\rm{m}}^2} = 1:100{\rm{ da}}{{\rm{m}}^2} = \frac{1}{{100}}{\rm{ da}}{{\rm{m}}^2}({\rm{hay }}0,01{\rm{da}}{{\rm{m}}^2})\)

\(8{\rm{da}}{{\rm{m}}^2} = 8:100{\rm{h}}{{\rm{m}}^2} = \frac{8}{{100}}{\rm{h}}{{\rm{m}}^2}({\rm{hay }}0,08{\rm{h}}{{\rm{m}}^2})\)

\(26{{\rm{m}}^2} = 26:100{\rm{da}}{{\rm{m}}^2} = \frac{{26}}{{100}}{\rm{da}}{{\rm{m}}^2}({\rm{hay }}0,26{\rm{da}}{{\rm{m}}^2})\)

\(42{\rm{da}}{{\rm{m}}^2} = 42:100{\rm{h}}{{\rm{m}}^2} = \frac{{42}}{{100}}{\rm{ h}}{{\rm{m}}^2}({\rm{hay }}0,42{\rm{h}}{{\rm{m}}^2})\)

\(15{{\rm{m}}^2} = 15 \times 10000{\rm{c}}{{\rm{m}}^2} = 150000{\rm{ c}}{{\rm{m}}^2}\)

\(7{\rm{da}}{{\rm{m}}^2} = 7 \times 10000{\rm{d}}{{\rm{m}}^2} = 70000{\rm{d}}{{\rm{m}}^2}\).