题目内容
脱式计算.
| 36÷4×5 | 9×(75+15) | 25×4×6 | 128+840÷6 | (270-198)×5 | 46-12×3. |
(1)36÷4×5,
=9×5,
=45;
(2)9×(75+15),
=9×90,
=810;
(3)25×4×6,
=100×6,
=600;
(4)128+840÷6,
=128+140,
=268;
(5)(270-198)×5,
=72×5,
=360;
(6)46-12×3,
=46-36,
=10.
=9×5,
=45;
(2)9×(75+15),
=9×90,
=810;
(3)25×4×6,
=100×6,
=600;
(4)128+840÷6,
=128+140,
=268;
(5)(270-198)×5,
=72×5,
=360;
(6)46-12×3,
=46-36,
=10.
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