Question

Вычислите используя переместительное и сочетательное свойство умножения 4•(25•6) 5•(20•86) 8•(125•9) (13•5)•2 (7•2)•50 (18•25)•4

Answer 1

1. (4×25)×6=100×6=600 2. (5×20)×86=100×86=8600 3. (8×125)×9=1000×9=9000 4. (5×2)×13=10×13=130 5. (2×50)×7=100×7=700 6. (25×4)×18=100×18=1800

Answer 2

$4times(25times6)=(4times25)times6=100times6=600\5times(20times86)=(5times20)times86=100times86=8600\8times(125times9)=(8times125)times9=1000times9=9000\(13times5)times2=13times(5times2)=13times10=130\(7times2)times50=7times(2times50)=7times100=700\(18times25)times4=18times(25times4)=18times100=1800$