Question

0.376×2.8 3.76×0.72,简便计算？

Answer 1

运用乘法分配律简算
0.376×2.8+3.76×0.72
=0.376×2.8+0.376×7.2
=0.376×（2.8+7.2）
=0.376×10
=3.76

Answer 2

0.376×2.8十3.76×0.72
＝3.76x0.28十3.76x0.72
＝3.76x（0.28十0.72）
＝3.76x1
＝3.76

Answer 3

因为0.376×2.8＝3.76×0.28，所以原式等于3.76×0.28+3.76×0.72运用乘法分配律逆运算就是3.76×（0.28+0.72）＝3.76

Answer 4

解，原式=0.376x2.8+0.376x10x0.72
=0.376x2.8+0.376x(10x0.72)
=0.376x2.8+0.376x7.2
=0.376x(2.8+7.2)
=0.376x10
=3.76

Answer 5

前后两项，2.8和0.72把其中一个缩小或扩大10倍，相加为1。
0.376×2.8+3.76×0.72
=3.76×0.28+3.76×0.72
=3.76×（0.28+0.72）
=3.76×1
=3.76