题目内容
脱式计算,能简算的要简算.
| 27×34-514 | 25×(40+4) | 4864÷8×7 | 56×99﹢56. |
(1)27×34-514,
=918-514,
=404;
(2)25×(40+4),
=25×40+25×4,
=1000+100,
=1100;
(3)4864÷8×7,
=608×7,
=4256;
(4)56×99﹢56,
=56×(99+1),
=56×100,
=5600.
=918-514,
=404;
(2)25×(40+4),
=25×40+25×4,
=1000+100,
=1100;
(3)4864÷8×7,
=608×7,
=4256;
(4)56×99﹢56,
=56×(99+1),
=56×100,
=5600.
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