a×18
（一）式子的運算_以符號列式
Quiz
•
Mathematics
•
7th Grade
•
Hard
小瑄 鄧
FREE Resource
24 questions
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1.
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1 min • 1 pt
Answer explanation
18a
2.
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1 min • 1 pt
y×2.5
Answer explanation
2.5y
3.
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1 min • 1 pt
50×x
Answer explanation
50x
4.
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1 min • 1 pt
5.
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1 min • 1 pt
x÷95
6.
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1 min • 1 pt
7.
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1 min • 1 pt
m×（－6）
Answer explanation
－6m
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