Question

2.54×6.3+0.37×75.4有简便方法吗要是有的话怎么计算？

求解答

Answer 1

有的，分配律找公因数，没有公因数根据数字来凑
2.54×6.3+0.37×75.4
=25.4x0.63+0.37x（25.4+50）
=25.4x0.63+0.37x25.4+0.37x50
=25.4(0.63+0.37)+18.5
=25.4+18.5
=43.9
望采纳，谢谢

Answer 2

简便算法是：
2.54×6.3+0.37×75.4
=2.54×6.3+7.54×3.7…………第二个因式两个因数分别扩大和减小10倍

=2.54×6.3+（2.54+5）×3.7

=2.54×6.3+2.54×3.7+5×3.7
=2.54×（6.3+3.7）+5×3.7
=2.54×10+18.5
=25.4+18.5
=43.9
望采纳，谢谢

Answer 3

2.54×6.3+0.37×75.4简便方法
=2.54×6.3+3.7×7.54
=2.54×6.3+3.7×(2.54+5)
=2.54×(6.3+3.7)+3.7x5
=25.4+18.5=43.9

Answer 4

2.54×6.3+0.37×75.4
=2.54×6.3+3.7×7.54
=2.54×6.3+3.7×2.54+3.7×5
=2.54×(6.3+3.7)+3.7×5
=2.54×10+18.5
=25.4+18.5
=43.9