Question

简便计算56×3.7+62×5.6等于多少？

Answer 1

56×3.7+62×5.6
=56×3.7+6.2×56
=56×（3.7+6.2）
=56×9.9
=554.4

Answer 2

56*3.7+62*5.6
5.6*37+62*5.6
(37+62)*5.6=560

Answer 3

=5.6*37+62*5.6
=5.6（37+62+1）-5.6
=5.6*100-5.6
=560-5.6
=554.4

Answer 4

利用积不变的性质，把56×3.7变为5.6×37或者将62×5.6变为6.2×56，再利用两次乘法分配律进行简算。过程如下:
解法一:
56×3.7+62×5.6
=5.6×37+62×5.6
=5.6×（37+62）
=5.6×99
=5.6×（100-1）
=5.6×100-5.6
=560-5.6
=554.4
解法二:
56×3.7+62×5.6
=56×3.7+6.2×56
=56×（3.7+6.2）
=56×9.9
=56×（10-0.1）
=56×10-56×0.1
=560-5.6
=554.4

Answer 5

简便计算56×3.7+62×5.6等于多少？

56*3.7+62*5.6
=5.6*37+62*5.6
=5.6*（37+62）
=5.6*99
=554.4