剪绳子 Flashcards

1
Q

一根绳子折成2段,中间剪一刀,可以剪成多少段?

A

2+1=3

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2
Q

一根绳子折成3段,中间剪一刀,可以剪成多少段?

A

3+1=4

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3
Q

一根绳子折成4段,中间剪一刀,可以剪成多少段?

A

4+1=5

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4
Q

一根绳子折成5段,中间剪一刀,可以剪成多少段?

A

5+1=6

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5
Q

一根绳子折成n段,中间剪一刀,可以剪成多少段?

A

n+1

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6
Q

一根绳子折成10段,中间剪一刀,可以剪成多少段?

A

10+1=11

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7
Q

一根绳子对折,折成成了几段?然后从中间一刀,绳子剪成了几段?

A

2

2+1=3

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8
Q

一根绳子对折2次,折成成了几段?然后从中间一刀,绳子剪成了几段?

A

2->2X2=4

4+1=5

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9
Q

一根绳子对折3次,折成成了几段?然后从中间一刀,绳子剪成了几段?

A

3->2X2X2=8

8+1=9

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10
Q

一根绳子对折4次,折成成了几段?然后从中间一刀,绳子剪成了几段?

A

4->2X2X2X2=16

16+1=17

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11
Q

一根绳子对折n次,折成成了几段?然后从中间一刀,绳子剪成了几段?

A

2X2X2···2=m
n个
m+1

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