7.7×96+2.3×9.6用简便计算怎么做

2024-12-16 09:56:44
推荐回答(1个)
回答1:

7.7×96+2.3×9.6
=96×(7.7+0.23)
=96×7.93
=100×7.93-4×7.93
=793-4×8+4×0.07
=793-32+0.28
=761.28