问题描述:
3.2X4.5X1.25
最佳答案:
解法一:
3.2×4.5×1.25
=(0.4×4.5)×(8×1.25)
=1.8×10
=18
解法二:
3.2×4.5×1.25
=4×0.8×4.5×1.25
=(4×4.5)×(0.8×1.25)
=18×1
=18
简便计算:3.2×4.5×1.25
问题描述:
3.2X4.5X1.25
解法一:
3.2×4.5×1.25
=(0.4×4.5)×(8×1.25)
=1.8×10
=18
解法二:
3.2×4.5×1.25
=4×0.8×4.5×1.25
=(4×4.5)×(0.8×1.25)
=18×1
=18