Solve the Two-Digit Multiplication: 29 × 28

Question

Which expression is the exercise 29X28 equal to?

00:00 Find the expression representing the correct factoring of the exercise

00:03 Let's use the distributive law

00:07 Let's break down 29 to 30 minus 1

00:12 Let's multiply each factor and then subtract

00:32 Let's solve the multiplication and find the expression

00:35 And this is the solution to the question

We begin by breaking down 29 into a subtraction exercise:

$(30-1)\times28=$

We then multiply each term inside the parentheses by 28 and we obtain the following:

$30\times28-1\times28=$

Let's observe the multiplication exercise on the right and remember that each term multiplied by 1 is equal to the term itself.

That is:

$30\times28-28$

30X28 less 28