KS3 Multiplying Fractions

Multiplying & Dividing Fractions 7/9/21

Year 8 Miss Hancock

​Please write questions and answers down in your book, before you select an answer!

​

​We will recap from last week how to multiple fractions.

​Example!

​Copy if you wish...

Multiple Choice

$$4\ \times\ \frac{2}{3}$$  

• $$\frac{6}{3}$$  

• $$\frac{8}{3}$$  

• $$\frac{2}{3}$$  

• $$\frac{12}{3}$$  

Multiple Choice

Jon ran 1/4 of a mile 5 days last week. What is the equation that matches this problem?

• $$4\ \times\ \frac{1}{4}=$$

• $$\frac{1}{4\ }+5\ =$$

• $$\frac{1}{4}\times5\ =$$

Multiple Choice

1/2 x 4 =

• 1

• 1 1/2

• 2

• 2 1/2

Multiple Choice

²/₅ x ¹/₃

• 2/15

• 3/8

• 3/15

• 2/8

Multiple Choice

3/4 x 1/6

• 1/8

• 5/24

• 4/10

• 3/10

​Multiplying Mixed Numbers

​

​Please write this down if it will help you to answer the questions on the next few slides, come back to this if you need help!

​

​When multiplying mixed numbers, convert them to an improper fraction first.

Multiple Choice

Convert the mixed fraction to a improper fraction.

• 27 /7

• 21 /7

• 31 /7

• 41/7

Multiple Choice

Convert the mixed fraction to a improper fraction.

• 22 /9

• 20/9

• 31 / 9

• 4/6

Multiple Choice

• 24/5

• 10/5

• 30/5

• 34/5

Multiple Choice

• 8  1/4

• 7  1/5

• 4  5/12

• 3  1/4

Multiple Choice

• 24   1/5

• 10   2/10

• 28  4/5

• 5  1/2

Multiple Choice

• 3/7

• 21

• 1/21

• 27/28

​

​

​Dividing Fractions!

​Some of you may already know how to divide fractions, if you do then proceed to the next questions!

​

​If not, please watch this video to go through the method :)

Multiple Choice

¹/₄  ÷  ¹/₂

• ²/₆
• ¹/₈
• ³/₅
• ²/₄

Multiple Choice

• $$\frac{6}{40}$$

• $$\frac{3}{4}$$

• $$\frac{1}{2}$$

• $$\frac{12}{20}$$

Multiple Choice

Solve.

• $$\frac{8}{9}$$

• $$\frac{1}{5}$$

• 1

• $$\frac{4}{5}$$

Multiple Choice

What is the rule for Dividing Fractions?

• "Keep, Keep, Flip"

• "Keep, Change, Flip"

• "Keep, Change, Keep

• I don't know!

Multiple Choice

• 3  2/7

• 4  ⁴/₇

• ⁵⁷/₉

• 5  ¹/₂

Multiple Choice

Simplify your answer as much as possible...

Write your answer as a mixed number...

• 1 ⁷/₈

• 3 ²/₆

• 3 ¹/₃

• 2 ¹/₈

Multiple Choice

Simplify your answer as much as possible...

Write your answer as a mixed number...

• 2 ¹⁴/₁₅

• 4 ⁷/₁₂

• ⁴⁴/₁₅

• 2 ¹³/₁₅

Multiple Choice

Simplify your answer as much as possible...

• ²⁵/₃₃

• ⁶⁰/₁₅

• ²⁰/₃₃

• ⁵⁵/₁₅

​CHALLENGE TASK

​Feeling confident? Head to Mathspad to complete

​'Multiplying and Dividing Fractions Practice 2'

​

​If you would like more practice please go to corbett maths.