Lesson 17- Dividing a Decimal by a Decimal

Objectives

At the end of this lesson, students should be able to divide a decimal number by another decimal.

Consider the number line below. How many times is 0.4 contained in 1-2?

• We can see that 0.4 is contained in 1.2 three (3) times.
• The division methods can also be used to solve this question as follows:

Multiply the numerator and denominator by 10 to make the denominator a whole number.

(This does not change the value of the decimals as  and any number multiplied by 1 remains the same without a change in value).

Based on this understanding, decimals can be multiplied by other decimals by following a few steps as follows: