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

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

asked Sep 24, 2021 3.1k views

4 votes

21x40=840, so 21x 42 =

Use mental math

Mathematics
college

Prabodh M asked

8.7k points

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1 Answer

2 votes

Answer:

882

Explanation:

mental math right ;)

Micael Levi answered Sep 28, 2021

7.6k points

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