Question

3.4x10.2+13.2x5.1简便计算？

Answer 1

解:可以运用乘法分配律将10.2化为此誉橡5.1x2同3.4连乘，提取5.1，然后按四则运虚薯算法则进行计算。计算过程森旁
3.4x10.2+13.2x5.1
=3.4ⅹ5.1ⅹ2+13.2ⅹ5.1
=5.1ⅹ(6.8+13.2)
=5.1x20
=102。

Answer 2

3.4×10.2+13.2×5.1
=3.4×10.2+6.6×2×5.1
=10.2×(3.4+6.6)
=102