1.76乘以5点2目录
o点48与1点3的和乘5点2与1点7的差,积是多少
列式为
(0.48 1.3)×(5.2-1.7)
=1.78×3.5
=6.23
1.25×5.6 2.50×4.4
=1.25×(8×0.7) 2.50×(4 0.4)
=1.25×8×0.7 2.50×4 2.50×0.4
=10×0.7 10 1
=7 10 1
=17 1
=18
18.97×0.48 1.897×5.2
=18.97×0.48 18.97×0.52
=18.97×(0.48 0.52)
=18.97×1
=18.97