题目内容
递等式计算,能简算的要简算.
| 7.3×101-7.3 | 4.59÷4.5÷0.2 | 2.7-2.6×0.5 |
| 7.49×9.9 | 48÷0.8×1.25 | 99×2.65+2.65 |
(1)7.3×101-7.3,
=7.3×(101-1),
=7.3×100,
=730;
(2)4.59÷4.5÷0.2,
=4.59÷(4.5×0.2),
=4.59÷0.9,
=5.1;
(3)2.7-2.6×0.5,
=2.7-1.3,
=1.4;
(4)7.49×9.9,
=7.49×(10-0.1),
=74.9-0.749,
=74.151;
(5)48÷0.8×1.25,
=60×1.25,
=75;
(6)99×2.65+2.65,
=(99+1)×2.65,
=100×2.65,
=265.
=7.3×(101-1),
=7.3×100,
=730;
(2)4.59÷4.5÷0.2,
=4.59÷(4.5×0.2),
=4.59÷0.9,
=5.1;
(3)2.7-2.6×0.5,
=2.7-1.3,
=1.4;
(4)7.49×9.9,
=7.49×(10-0.1),
=74.9-0.749,
=74.151;
(5)48÷0.8×1.25,
=60×1.25,
=75;
(6)99×2.65+2.65,
=(99+1)×2.65,
=100×2.65,
=265.
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