0.8×(3.2-0.4)÷0.2 12.75÷(16-7.36-3.64) 简便算法0.8×(3.2-0.4)÷0.2 12.75÷(16-7.36-3.64) 简便算法

问题描述:

0.8×(3.2-0.4)÷0.2 12.75÷(16-7.36-3.64) 简便算法
0.8×(3.2-0.4)÷0.2 12.75÷(16-7.36-3.64) 简便算法

0.8×(3.2-0.4)÷0.2
=0.8÷0.2×2.8
=4×2.8
=11.2
12.75÷(16-7.36-3.64)
=12.75÷【16-(7.36+3.64)】
=12.75÷【16-11】
=12.75×5
=63.75

0.8×(3.2-0.4)÷0.2
=4×2.8
=11.2
12.75÷(16-7.36-3.64)
=12.75÷(16-(7.36+3.64))
=12.75÷(16-11)
=12.75÷5
=2.55