Divide by decimals

Change the Divisor to a Whole Number

You've already learnt how to divide decimal numbers by whole numbers so this can be a really useful strategy.

Let's look at an example to explain how this strategy works.

Examples

Question 1

Evaluate: $5.6\div0.8$5.6÷​0.8

Think: We can change $0.8$0.8 to a whole number ($8$8) by multiplying in by $10$10. Remember we need to multiply both numbers in our equation by the same value to keep our equation balanced. We could now write our equation as $56\div8$56÷​8, which is $7$7.

Do: $5.6\div0.8=7$5.6÷​0.8=7

 

Make sense? Let's do another example to make sure.

question 2

Evaluate: $5.23\div0.4$5.23÷​0.4

Think: We can change $0.4$0.4 to a whole number ($4$4) by multiplying it by $10$10. So we need to multiply both numbers in our equation by $10$10. Our equation becomes $52.3\div4$52.3÷​4, which would be $13.075$13.075.

Do: $5.23\div0.4=13.075$5.23÷​0.4=13.075

QUESTION 3

QUESTION 4

QUESTION 5

QUESTION 6