要简算 8×14×1.25; 3/5×8.8+0.6×1/5+60%.

问题描述:

要简算
8×14×1.25;        

3
5
×8.8+0.6×
1
5
+60%.

①8×14×1.25
=(8×1.25)×14
=10×14
=140

3
5
×8.8+0.6×
1
5
+60%
=0.6×8.8+0.6×0.2+0.6
=0.6×(8.8+0.2+1)
=0.6×10
=6