Expressing as a Ratio – Bingo Method Students should choose nine answers from the grid and place them randomly into a 3x3 square in their book. You may want to pause your display and choose questions according to difficulty during the game. Depending on time, students could win with a line, an X, or a ‘full house’ (all).

Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts - Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

BINGO! 45 54 23 82 37 12 76 25 91 Expressing as a Ratio

Choose your numbers… 3 : 5 3 : 2 1 : 5 7 : 12 11 : 8 4 : 5 1 : 4 : 7 7 : 12 : 2 9 : 13 1 : 4 11 : 9 7 : 8 : 18 4 : 9 10 : 3 : 17 1 : 15 3 : 4 Draw a 3x3 grid in your book.

18 : 26 9 : 13 ÷ 2 ÷ 2 Jenny & Jerry share some sweets. Jenny gets 18 & Jerry gets 26. Express this as a ratio in its simplest form. 18 : 26 ÷ 2 ÷ 2 9 : 13

16 : 36 4 : 9 ÷ 4 ÷ 4 Pete & Paul robbed a bank! Pete got $16 & Paul got $36. Express this as a ratio in its simplest form. 16 : 36 ÷ 4 ÷ 4 4 : 9

12 : 15 4 : 5 ÷ 3 ÷ 3 May is 12 years old & Mary is 15 years old. Express this as a ratio in its simplest form. 12 : 15 ÷ 3 ÷ 3 4 : 5

A chef has 4 boxes of eggs. Each box holds 6 eggs. Write a ratio for the number of eggs in 3 boxes, to the total number of eggs. 18 : 24 ÷ 6 ÷ 6 3 : 4

22 : 16 11 : 8 ÷ 2 ÷ 2 Hannah & Harry share some sweets. Hannah gets 22 & Harry gets 16. Express this as a ratio in its simplest form. 22 : 16 ÷ 2 ÷ 2 11 : 8

Express this as a ratio in its simplest form. John & Joe robbed a bank! John got $33 & Joe got $27. Express this as a ratio in its simplest form. 33 : 27 ÷ 3 ÷ 3 11 : 9

Anna is 14 years old, Mike is 16 years old and Joe is 36 years old. Express this as a ratio in its simplest form. 14 : 16 : 36 ÷ 2 ÷ 2 7 : 8 : 18

A chef has 10 boxes of eggs. Each box holds 6 eggs. Write a ratio for the number of eggs in 2 boxes, to the total number of eggs. 12 : 60 ÷ 12 ÷ 12 1 : 5

8 : 32 1 : 4 ÷ 8 ÷ 8 Max and Matthew share some sweets. Max gets 8 & Matthew gets 32. Express this as a ratio in its simplest form. 8 : 32 ÷ 8 ÷ 8 1 : 4

28 : 48 : 8 7 : 12 : 2 ÷ 4 ÷ 4 Tom, Tim & Ted robbed a bank! Tom got $28, Tim got $46 & Ted got $8. Express this as a ratio in its simplest form. 28 : 48 : 8 ÷ 4 ÷ 4 7 : 12 : 2

Jane is 14 years old & her brother Mike is 24 years old Jane is 14 years old & her brother Mike is 24 years old. Express this as a ratio in its simplest form. 14 : 24 ÷ 2 ÷ 2 7 : 12

A chef has 30 boxes of eggs. Each box holds 6 eggs. Write a ratio for the number of eggs in 2 boxes, to the total number of eggs. 12 : 180 ÷ 12 ÷ 12 1 : 15

Express this as a ratio in its simplest form. Bill & Bob robbed a bank! Bill got $45 & Bob got $30. Express this as a ratio in its simplest form. 45 : 30 ÷ 15 ÷ 15 3 : 2

Ruth is 9 years old, Richard is 36 years old & Ruby is 63 years old. Express this as a ratio in its simplest form. 9 : 36 : 63 ÷ 9 ÷ 9 1 : 4 : 7

A chef has 5 boxes of eggs. Each box holds 6 eggs. Write a ratio for the number of eggs in 3 boxes, to the total number of eggs. 18 : 30 ÷ 6 ÷ 6 3 : 5

20 : 6 : 34 10 : 3 : 17 ÷ 2 ÷ 2 Fran, Dan & Pam share some sweets. Fran gets 20, Dan gets 6 & Pam gets 34. Express this as a ratio in its simplest form. 20 : 6 : 34 ÷ 2 ÷ 2 10 : 3 : 17

tom@goteachmaths.co.uk Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths.co.uk