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Add or subtract mentally 8.01+1.09
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1 vote
Add or subtract mentally 8.01+1.09

User Khaled
by
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2 Answers

2 votes
Add mentally =9.10
subtract mentally=6.92
User Dmitry Seleznev
by
8.7k points
3 votes
The answer is 9.10 (since you put an addition sign.)
User Christian Palmer
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8.3k points
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