How can you use 3x7 to find 6x7?

Answer 1

if you do 3x7 and you need to get 6x7 then just do it 2 times

Answer 2

To find 6x7 using 3x7, you can simply double the result of 3x7. This is because multiplication is distributive over addition, meaning that multiplying a number by a sum is the same as multiplying the number by each addend and then adding the products. In this case, 6x7 can be thought of as (3+3)x7, which equals 3x7 + 3x7, or 21 + 21, which equals 42.