-
Introduction
View the activity introduction for more information on the topic
-
Read aloud
Read the question aloud
-
Accessibility
Open the accessibility toolbar to change fonts and contrast, choose a different language, use a ruler and more
In this activity, we will practise dividing a whole number by a fraction.
The method we're going to use is KFC
No, not the takeaway chicken - something much better!
KFC stands for Keep Flip Change
First, we keep the first number or fraction unchanged.
Next, we flip the second fraction upside down.
Finally, we change the sign between the two fractions or numbers from ÷ to x.
If we are dividing whole numbers by fractions, we just keep the whole number unchanged, just as you would if it had been a fraction.
Examples
15 ÷ 5/6
Keep the whole number as it is: 15
Flip the fraction you're dividing by: 6/5
Change the sign to x
Now we have 15 x 6/5
The rule for multiplying a whole number by a fraction is divide the big number by the bottom number and multiply by the top number.
15 x 6/5
15 ÷ 5 = 3
3 x 6 = 18
So 15 ÷ 5/6 = 18
Let's look at another one.
32 ÷ 8/11
Keep 32 unchanged: 32
Flip the fraction you're dividing by: 11/8
Change the sign to x
32 x 11/8
Divide the big number by the bottom number: 32 ÷ 8 = 4
Multiply by the top number: 4 x 11 = 44
So, 32 ÷ 8/11 = 44
Shall we have a go at some questions?
Question
/ 10Mr Shepherd
Do you want to skip questions and finish?
Hold up, it looks like there may be an issue with your spelling. Why not try it again?
You need to check your answer before you proceed. Are you sure you want to skip?
Teacher explanation