Solve the Subtraction: Finding the Difference Between 140 and 70

Question

$140-70=$

00:00 Solve

00:03 We will use the distributive law

00:07 Let's break down 140 into 100 plus 40

00:16 We will use the commutative law and arrange the exercise in a convenient way to solve

00:22 We will solve according to the order of operations from left to right

00:31 And this is the solution to the question

In order to simplify the resolution process, we begin by using the distributive property for 140:

$100+40-70=$

We then rearrange the exercise using the substitution property into a more practical form:

$100-70+40=$

Lastly we solve the exercise from left to right:

$100-70=30$

$30+40=70$