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脱式计算,能简算的要简算.0.7×101-0.70.125×4.7×812.5-1.68-2.32567÷20÷5.
题目详情
脱式计算,能简算的要简算.
0.7×101-0.7 0.125×4.7×8 12.5-1.68-2.32 567÷20÷5. 0.7×101-0.7 0.125×4.7×8 12.5-1.68-2.32 567÷20÷5.
0.7×101-0.7 | 0.125×4.7×8 | 12.5-1.68-2.32 | 567÷20÷5. |
0.7×101-0.7 | 0.125×4.7×8 | 12.5-1.68-2.32 | 567÷20÷5. |
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答案和解析
(1)0.7×101-0.7,
=0.7×(101-1),
=0.7×100,
=70;
(2)0.125×4.7×8,
=(0.125×8)×4.7,
=1×4.7,
=4.7;
(3)12.5-1.68-2.32,
=12.5-(1.68+2.32),
=12.5-4,
=8.5;
(4)567÷20÷5,
=567÷(20×5),
=567÷100,
=5.67.
=0.7×(101-1),
=0.7×100,
=70;
(2)0.125×4.7×8,
=(0.125×8)×4.7,
=1×4.7,
=4.7;
(3)12.5-1.68-2.32,
=12.5-(1.68+2.32),
=12.5-4,
=8.5;
(4)567÷20÷5,
=567÷(20×5),
=567÷100,
=5.67.
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