Question

Find the product of the numbers 4, 20, and 5 using properites of multiplication.

Answer 1

Let's use the associative property to simplify the data.
Try to group the factors which are easier to multiply.
$4\times 20\times 5=20\times (4\times 5)$
First, multiply the numbers inside the brackets
$=20\times 20$
Now, multiply 20 and 20 to get the final result.
$=400$