题目内容
简便计算
100.6-45.73+29.4-14.27
75×60%+24×0.6+
(2.4×51×45)÷(0.9×17×7.2)
47×
.
100.6-45.73+29.4-14.27
75×60%+24×0.6+
| 3 |
| 5 |
(2.4×51×45)÷(0.9×17×7.2)
47×
| 1 |
| 48 |
(1)100.6-45.73+29.4-14.27
=100.6+29.4-(45.73+14.27),
=130-60,
=70;
(2)75×60%+24×0.6+
=75×0.6+24×0.6+0.6,
=(75+24+1)×0.6,
=100×0.6,
=60;
(3)(2.4×51×45)÷(0.9×17×7.2)
=2.4×51×45÷0.9÷17÷7.2,
=2.4×(51÷17)÷7.2×(45÷0.9),
=2.4×3÷7.2×50,
=7.2÷7.2×50,
=50;
(5)47×
=
.
=100.6+29.4-(45.73+14.27),
=130-60,
=70;
(2)75×60%+24×0.6+
| 3 |
| 5 |
=75×0.6+24×0.6+0.6,
=(75+24+1)×0.6,
=100×0.6,
=60;
(3)(2.4×51×45)÷(0.9×17×7.2)
=2.4×51×45÷0.9÷17÷7.2,
=2.4×(51÷17)÷7.2×(45÷0.9),
=2.4×3÷7.2×50,
=7.2÷7.2×50,
=50;
(5)47×
| 1 |
| 48 |
| 7 |
| 48 |
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