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能简算的要用简便方法计算 7.6×5.3+3.7×7.6     &n

来源:学生作业帮 编辑:拍题作业网作业帮 分类:综合作业 时间:2024/04/30 14:02:30
能简算的要用简便方法计算
7.6×5.3+3.7×7.6         (3.7+17×0.4)÷3.5            75.36÷12-4.32×0.5
8.8×0.125              24.1×1.5+7.59×15            6.6÷(0.68+0.42)
①7.6×5.3+3.7×7.6 
=7.6×(5.3+3.7)
=7.6×9
=68.4

②(3.7+17×0.4)÷3.5  
=(3.7+6.8)÷3.5
=10.5÷3.5
=3

③75.36÷12-4.32×0.5
=6.28-2.16
=4.12

④8.8×0.125
=1.1×8×0.125
=1.1×1
=1.1

⑤24.1×1.5+7.59×15 
=2.41×15+7.59×15
=15×(2.41+7.59)
=15×10
=150  

 ⑥6.6÷(0.68+0.42)
=6.6÷1.1
=6