Question

6.5×1.1×4.1的简便运算

Answer 1

6.5×1.1×4.1=29.315
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Answer 2

6.5×1.1×4.4
=6.5×（4+0.4）×（1+0.1）
=（6.5×4+6.5×0.4）×（1+0.1）
=（26+2.6）×（1+0.1）
=28.6+2.86
=31.46