

方程式の利用
Presentation
•
Mathematics
•
1st Grade
•
Hard
yukinobu yamada
FREE Resource
4 Slides • 4 Questions
1
2
Fill in the Blanks
ある数は3倍して2をたすと20である。
ある数を答えよ!
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3
Fill in the Blanks
ある数は正の数でも負の数でもない。
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4
5
Multiple Choice
ある数の5倍から2をひくと30にもとの数を加えた数と等しくなる。
ある数をxとして、方程式をつくるとどんな方程式になる?
5xー2=30+x
5-2=30x
5xー2+x=30
6
7
Multiple Choice
Aさんは42歳、Bさんは12歳で、
何年かたつとAさんの年齢はBさんの年齢の3倍になる。
x年後になるとして、方程式をつくるとどんな方程式になる?
42+x=3(12+x)
42+x=3×12
42=3(12+x)
8
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