数学问题集
Authored by Shiqi Jiang
Mathematics
7th Grade
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果一个角等于它的余角的2倍，那么这个角的补角为
30
60
120
135
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
正方体的平面展开图如图所示，则原正方体中与“斗”字所在的面相对的面上的字是
(a)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图，已知∠AOB = α，∠AOC = β，ON平分∠AOC，OM平分∠BOC，则∠MON的度数是
不能计算
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列计算正确的是
3a-a=3
5xy-2xy=3xy
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
10
5
2
-3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
用代数式表示“a的平方的2倍与b的差的一半”为
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