2个回答
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很简单
1. What must be added to 391 to make 400?
(391必须加上多少才等于400?)答案:400-391=9英语:400 minus 391 is 9
2. 368 plus(加)200 is(等于)(568)
315 minus(减)100 is (215) 照这样自己出几道
3. Can you spot the patterns of the followings?(你能找出下列规律吗)
2 4 6 (8) (10)
2 5 8 11 (14)
100 95 90 (85) (80)
26 21 16 (11) (6)
1 3 5 (7) (9)
1 4 9 16 (25)解释
1×1 2×2 3×3 4×4 5×5
1. What must be added to 391 to make 400?
(391必须加上多少才等于400?)答案:400-391=9英语:400 minus 391 is 9
2. 368 plus(加)200 is(等于)(568)
315 minus(减)100 is (215) 照这样自己出几道
3. Can you spot the patterns of the followings?(你能找出下列规律吗)
2 4 6 (8) (10)
2 5 8 11 (14)
100 95 90 (85) (80)
26 21 16 (11) (6)
1 3 5 (7) (9)
1 4 9 16 (25)解释
1×1 2×2 3×3 4×4 5×5
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