1 |
3 |
1 |
4 |
(4)-(3) |
3×4 |
1 |
3×4 |
1 |
7 |
1 |
8 |
( )-( ) |
7×8 |
1 |
7×8 |
1 |
20 |
1 |
21 |
( )-( ) |
20×21 |
1 |
20×21 |
1 |
100 |
1 |
101 |
( ) |
( ) |
1 |
a |
1 |
a+1 |
a+1 |
a?a+1 |
1 |
a?(a+1) |
1 |
a?(a+1) |
1 |
2×3 |
1 |
( ) |
1 |
( ) |
1 |
5×6 |
1 |
( ) |
1 |
( ) |
1 |
40×41 |
1 |
( ) |
1 |
( ) |
1 |
1999×2000 |
1 |
( ) |
1 |
( ) |
1 |
42 |
1 |
( ) |
1 |
( ) |
1 |
9900 |
1 |
( ) |
1 |
( ) |
1 |
72 |
1 |
( ) |
1 |
( ) |
1 |
n?(n+1) |
1 |
( ) |
1 |
( ) |
1 |
7 |
1 |
8 |
8-7 |
7×8 |
1 |
7×8 |
1 |
20 |
1 |
21 |
21-20 |
20×21 |
1 |
20×21 |
1 |
100 |
1 |
101 |
101-100 |
100×101 |
1 |
100×101 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
5×6 |
1 |
5 |
1 |
6 |
1 |
40×41 |
1 |
40 |
1 |
41 |
1 |
1999×2000 |
1 |
1999 |
1 |
2000 |
1 |
42 |
1 |
6 |
1 |
7 |
1 |
9900 |
1 |
99 |
1 |
100 |
1 |
72 |
1 |
8 |
1 |
9 |
1 |
n?(n+1) |
1 |
n |
1 |
n+1 |
1 |
n(n+1) |
1 |
n |
1 |
n+1 |
科目:小學(xué)數(shù)學(xué) 來源: 題型:
1 |
2×3 |
1 |
( ) |
1 |
( ) |
1 |
3×4 |
1 |
( ) |
1 |
( ) |
1 |
5×6 |
1 |
( ) |
1 |
( ) |
1 |
2×3 |
1 |
3×4 |
1 |
4×5 |
1 |
5×6 |
1 |
6×7 |
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科目:小學(xué)數(shù)學(xué) 來源: 題型:
3 |
4 |
1+2 |
4 |
1 |
4 |
2 |
4 |
1 |
4 |
1 |
2 |
2 |
3 |
4 |
6 |
1+3 |
6 |
1 |
6 |
3 |
6 |
1 |
6 |
1 |
2 |
5 |
8 |
3 |
5 |
5 |
8 |
3 |
5 |
3 |
4 |
1 |
4 |
1 |
2 |
1 |
2 |
3 |
6 |
1+2 |
6 |
1 |
6 |
2 |
6 |
1 |
6 |
1 |
3 |
3 |
4 |
1 |
4 |
1 |
6 |
1 |
3 |
3 |
4 |
5 |
8 |
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科目:小學(xué)數(shù)學(xué) 來源:不詳 題型:解答題
3 |
4 |
1+2 |
4 |
1 |
4 |
2 |
4 |
1 |
4 |
1 |
2 |
2 |
3 |
4 |
6 |
1+3 |
6 |
1 |
6 |
3 |
6 |
1 |
6 |
1 |
2 |
5 |
8 |
3 |
5 |
5 |
8 |
3 |
5 |
3 |
4 |
1 |
4 |
1 |
2 |
1 |
2 |
3 |
6 |
1+2 |
6 |
1 |
6 |
2 |
6 |
1 |
6 |
1 |
3 |
3 |
4 |
1 |
4 |
1 |
6 |
1 |
3 |
3 |
4 |
5 |
8 |
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科目:小學(xué)數(shù)學(xué) 來源:不詳 題型:解答題
1 |
2×3 |
1 |
( ) |
1 |
( ) |
1 |
3×4 |
1 |
( ) |
1 |
( ) |
1 |
5×6 |
1 |
( ) |
1 |
( ) |
1 |
2×3 |
1 |
3×4 |
1 |
4×5 |
1 |
5×6 |
1 |
6×7 |
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