4B专题15数数图形（二）
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Mathematics
5th Grade
Used 1+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中有多少个三角形？
6个
7个
8个
9个
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中有多少个正方形？
14个
15个
16个
17个
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中有多少个正方形？
27个
28个
29个
30个
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中有多少个三角形？
【解析】一共有（3+2+1）+（3+2+1）=12个。
【解析】一共有（4+3+2+1）+（4+3+2+1）=20个。
【解析】一共有（5+4+3+2+1）+（5+4+3+2+1）=30个。
【解析】一共有（2+1）+（2+1）=6个。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中有多少个梯形？
【解析】一共有（4+3+2+1）x 3 =30个。
【解析】一共有（4+3+2+1）x 2 =20个。
【解析】一共有（4+3+2+1）x 1 =10个。
【解析】一共有（4+3+2+1）x 5 =50个。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
请作答。
50个正方形；15个长方形
52个正方形；28个长方形
40个正方形；40个长方形
40个正方形；60个长方形
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