题目内容
脱式计算.
| 408×5-2000 | 125×3×8 | 232+512÷8 | 6×(310+280) |
(1)408×5-2000,
=2040-2000,
=40;
(2)125×3×8,
=125×8×3,
=1000×3,
=3000;
(3)232+512÷8,
=232+64,
=296;
(4)6×(310+280),
=6×590,
=3540.
=2040-2000,
=40;
(2)125×3×8,
=125×8×3,
=1000×3,
=3000;
(3)232+512÷8,
=232+64,
=296;
(4)6×(310+280),
=6×590,
=3540.
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