题目内容
我会填。 34+8=42,42-7=35。→ 34+8-7 =42-7 =35
|
(1)47-12-30 =35-30 =5 |
(2)15-7+23 =8+23 =31 |
(3)17+7+16 =34+16 =40 |
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题目内容
我会填。 34+8=42,42-7=35。→ 34+8-7 =42-7 =35
|
(1)47-12-30 =35-30 =5 |
(2)15-7+23 =8+23 =31 |
(3)17+7+16 =34+16 =40 |