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30-20 show your work using quick tens
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30-20 show your work using quick tens

User Kharl
by
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2 Answers

4 votes
30-20=10 10 is the answer
User Cwtuan
by
8.3k points
1 vote
30-10=20
20-10=10

or
10+20=30
User Rohit Azad Malik
by
7.4k points
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