用递等式计算2.98+6.5×（3.2-3.12） [(6.1-4.6）+0.8]×0.4

分类: 作业答案 • 2022-05-16 15:34:29

问题描述：

答

2.98+6.5×（3.2-3.12）
=2.98+6.5×0.08
=2.98+0.52
=3.5
[(6.1-4.6）+0.8]×0.4
=(1.5+0.8)×0.4
=2.3×0.4
=0.92

答

2.98+6.5×（3.2-3.12）
=2.98+6.5×0.08
=2.98+0.52
=3.5
[(6.1-4.6）+0.8]×0.4
=[1.5+0.8]×0.4
=2.3×0.4
=0.92