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用简便方法计算.12.5×4.82.67×1.8+2.33×1.8.

题目详情
用简便方法计算.
12.5×4.8                                 
2.67×1.8+2.33×1.8.
▼优质解答
答案和解析
(1)12.5×4.8
=12.5×8×0.6
=100×0.6
=60;

(2)2.67×1.8+2.33×1.8
=(2.67+2.33)×1.8
=5×1.8
=9.