8.88X1.25、2.5X(6.3-2.5)X0.4怎么简算?
问题描述:
8.88X1.25、2.5X(6.3-2.5)X0.4怎么简算?
答
8.88X1.25
=1.11×8×1.25
=1.11×10
=11.1
2.5X(6.3-2.5)X0.4
=2.5×0.4×(6.3-2.5)
=1×3.8
=3.8