题目内容
脱式计算,能简便的要简便.
| 1.25×9.76×80 | 3.2×2.5 | 23.6×99+23.6 |
| 36.7+63.3×2.4 | 54.3÷4÷2.5 | 0.75×18÷0.15. |
(1)1.25×9.76×80,
=1.25×80×9.76,
=100×9.76,
=976;
(2)3.2×2.5,
=0.8×4×2.5,
=0.8×(4×2.5),
=0.8×10,
=8;
(3)23.6×99+23.6,
=23.6×(99+1),
=23.6×100,
=2360;
(4)36.7+63.3×2.4,
=36.7+151.92,
=188.62;
(5)54.3÷4÷2.5,
=54.3÷(4×2.5),
=54.3÷10,
=5.43;
(6)0.75×18÷0.15,
=0.75÷0.15×18,
=5×18,
=90.
=1.25×80×9.76,
=100×9.76,
=976;
(2)3.2×2.5,
=0.8×4×2.5,
=0.8×(4×2.5),
=0.8×10,
=8;
(3)23.6×99+23.6,
=23.6×(99+1),
=23.6×100,
=2360;
(4)36.7+63.3×2.4,
=36.7+151.92,
=188.62;
(5)54.3÷4÷2.5,
=54.3÷(4×2.5),
=54.3÷10,
=5.43;
(6)0.75×18÷0.15,
=0.75÷0.15×18,
=5×18,
=90.
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