简便计算:0.8×(4.3×7.25)(+—皿—)马上要用
问题描述:
简便计算:0.8×(4.3×7.25)
(+—皿—)马上要用
答
=(0.8×7.25)×4.3
=5.8×4.3
=24.94
答
0.8×(4.3×7.25)
=0.8×(4.3×1.25x5)
=0.8×1.25x5x4.3
=1x5x4.3
=21.5