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能简算的要用简便方法计算

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:2024/04/28 02:43:04
能简算的要用简便方法计算
24.1×1.5+7.59×15       (3.7+17×0.4)÷3.5       75.36÷12-4.32×0.5
8.8×0.125                7.6×5.3+3.7×7.6          6.6÷(0.68+0.42)
①24.1×1.5+7.59×15,
=2.41×15+7.59×15,
=(2.41+7.59)×15,
=10×15,
=150;
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,
=(8+0.8)×0.125,
=8×0.125+0.8×0.125,
=1+0.1,
=1.1;
⑤7.6×5.3+3.7×7.6,
=(5.3+3.7)×7.6,
=9×7.6,
=68.4;
⑥6.6÷(0.68+0.42),
=6.6÷1.1,
=6.