题目内容
| 脱式计算: 300×2+700 | 140×5-300 | 206×(5+3) |
(1)300×2+700
=600+700
=1300;
(2)140×5-300
=700-300
=400;
(3)206×(5+3)
=206×8
=1248.
=600+700
=1300;
(2)140×5-300
=700-300
=400;
(3)206×(5+3)
=206×8
=1248.
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题目内容
| 脱式计算: 300×2+700 | 140×5-300 | 206×(5+3) |