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21x40=840, so 21x 42 = Use mental math
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4 votes
21x40=840, so 21x 42 =

Use mental math

User Prabodh M
by
7.4k points

1 Answer

2 votes

Answer:

882

Explanation:

mental math right ;)

User Micael Levi
by
6.3k points
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