题目内容
| 计算下面各题,能简算的要简算 2.4×(3-2.5)÷0.75 | 4.2-1.38+5.8-3.62 | ||
0.75×99-
| 0.125×0.25×32( ) |
(1)2.4×(3-2.5)÷0.75,
=2.4×0.5÷0.75,
=1.2÷0.75,
=1.6;
(2)4.2-1.38+5.8-3.62,
=(4.2+5.8)-(1.38+3.62),
=10-5,
=5;
(3)0.75×99-
+2×75%,
=0.75×(99-1+2),
=0.75×100,
=75;
(4)0.125×0.25×32,
=0.125×0.25×4×8,
=(0.125×8)×(0.25×4),
=1×1,
=1.
=2.4×0.5÷0.75,
=1.2÷0.75,
=1.6;
(2)4.2-1.38+5.8-3.62,
=(4.2+5.8)-(1.38+3.62),
=10-5,
=5;
(3)0.75×99-
| 3 |
| 4 |
=0.75×(99-1+2),
=0.75×100,
=75;
(4)0.125×0.25×32,
=0.125×0.25×4×8,
=(0.125×8)×(0.25×4),
=1×1,
=1.
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