Tính giá trị của biểu thức

a) 21 547 + 36 510 + 18 453 + 13 490

b) 157 468 + 263 140 – 57 468 – 63 140

c) 125 × 4 × 50 × 8 × 25 × 2

d) 12 500 × 32 + 12 500 × 45 + 23 × 12 500

e) 54 264 + 32 154 + 35 736 + 17 846

f) 234 567 + 159 678 – 59 678 – 34 567

g) 25 × 50 × 80 × 4 × 125 × 20

h) 6 480 × 23 + 6 480 × 35 + 19 × 6 480 + 49 × 6 480 – 6 480 × 26

i) 2 987 × 26 + 34 578

j) 657 400 : 25 – 5 102

k) 146 × 34 + 564 : 12

a) 21 547 + 36 510 + 18 453 + 13 490

= (21 547 + 18 453) + ( 36 510 + 13 490)

= 40 000 + 50 000

= 90 000

b) 157 468 + 263 140 – 57 468 – 63 140

= (157 468 – 57 468) + (263 140 – 63 140)

= 100 000 + 200 000

= 300 000

c) 125 × 4 × 50 × 8 × 25 × 2

= (125 × 8) × (50 × 2) × (25 × 4)

= 1 000 × 100 × 100

= 10 000 000

d) 12 500 × 32 + 12 500 × 45 + 23 × 12 500

= 12 500 × (32 + 45 + 23)

= 12 500 × 100

= 1 250 000

e) 54 264 + 32 154 + 35 736 + 17 846

= (54 264 + 35 736) + (32 154 + 17 846)

= 90 000 + 50 000

= 140 000

f) 234 567 + 159 678 – 59 678 – 34 567

= (234 567 – 34 567) + (159 678 – 59 678)

= 200 000 + 100 000

= 300 000

g) 25 × 50 × 80 × 4 × 125 × 20

= (125 × 80) × (25 × 4) × (50 × 20)

= 10 000 × 100 × 1 000

= 1 000 000 000

h) 6 480 × 23 + 6 480 × 35 + 19 × 6 480 + 49 × 6 480 – 6 480 × 26

= 6 480 × (23 + 35 + 19 + 49 – 26)

= 6 480 × 100

= 648 000

i) 2 987 × 26 + 34 578

= 77 662 + 34 578

= 112 240

j) 657 400 : 25 – 5 102

= 26 296 – 5 102

= 21 194

k) 146 × 34 + 564 : 12

= 4 964 + 47

= 5 011