Question

Explain how finding 7 x 20 is similar to finding 7 x 2000. Then find each product.

Answer 1

It's simple. You will get the same answers but with more zeros. For example 7x20 is 140, and 7x2000 is 14,000 but with more zeros.

Answer 2

The first thing we are going to do in this case is to find the following product:
 $7 * 20$
 We then have to multiply:
 $7 * 20 = 140$
 Then, we have the following product:
 $7 * 2000$
 Rewriting the product we have:
 $7 * 20 * 100$
 Then, using commutative property we have:
 $(7 * 20) * 100$
 Substituting values:
 $(140) * 100$
 When you multiply by 100, you only have to add two zeros to the right.
 We have then:
 $(140) * 100 = 14000$
 Answer:
 $7 * 20 = 140 (140) * 100 = 14000$