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用简便方法计算0.88×4.9+5.1×0.88;6.5×20.1.

题目详情
用简便方法计算
0.88×4.9+5.1×0.88;      6.5×20.1.
▼优质解答
答案和解析
(1)0.88×4.9+5.1×0.88
=0.88×(4.9+5.1)
=10×0.88
=8.8;
(2)6.5×20.1
=6.5×(20+0.1)
=6.5×20+0.1×6.5
=130+0.65
=130.65.