Ratio Combining Bingo Method Students should choose nine
Ratio – Combining – Bingo Method Students should choose nine answers from the grid and place them randomly into a 3 x 3 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).
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BINGO! 45 54 23 82 37 12 76 25 91 Combining Ratios
Choose your numbers… 15 : 12 : 10 5: 6 20 : 8 : 3 3: 5 5: 8 20 : 25 : 36 3 : 10 6 : 5 : 21 6 : 21 : 28 15 : 4 35 : 10 : 7 3: 8 14 : 25 15 : 9 : 4 8 : 15 6 : 15 : 25 Draw a 3 x 3 grid in your book.
In a box there are some cubes… The ratio of pink cubes to grey cubes is 5: 3 The ratio of orange cubes to grey cubes is 4: 9 What is the ratio of pink cubes to grey cubes to orange cubes? × 3 PINK 5 15 : : GREY 3 9 PINK 15 : ORANGE 4 GREY 9 : : GREY 9 ORANGE 4
In a bag there are some buttons… The ratio of white buttons to black buttons is 6: 5 The ratio of green buttons to white buttons is 7: 2 What is the ratio of white to black to green buttons? WHITE 6 : BLACK 5 WHITE 6 : GREEN 7 21 BLACK 5 : : : WHITE 2 6 GREEN 21 × 3
In a bag there are some cubes… The ratio of orange cubes to green cubes is 5: 4 The ratio of blue cubes to green cubes is 5: 6 What is the ratio of orange cubes to green cubes to blue cubes? × 3 ORANGE GREEN 5 4 15 12 : : BLUE 5 10 ORANGE GREEN 15 12 : : : : GREEN 6 12 BLUE 10 × 2
In a bag there are some sweets… The ratio of cherry sweets to lime sweets is 5: 1 The ratio of lime sweets to apple sweets is 3: 4 What is the ratio of cherry sweets to apple sweets? × 3 CHERRY 5 15 : : LIME 3 LIME 1 3 CHERRY 15 : LIME 3 CHERRY 15 : : : APPLE 4
In a bag there are some pens… The ratio of red pens to black pens is 5: 2 The ratio of black pens to blue pens is 8: 3 What is the ratio of red pens to black pens to blue pens? × 4 RED 5 20 : : BLACK 2 8 RED 20 : BLACK 8 : : BLUE 3
In a bag there are some pens… The ratio of black pens to yellow pens is 2: 5 The ratio of yellow pens to pink pens is 3: 5 What is the ratio of black pens to yellow pens to pink pens? × 3 BLACK 2 6 : : YELLOW 3 5 15 15 BLACK 6 : YELLOW 15 : : : PINK 25 PINK 5 25 × 5
In a bag there are some buttons… The ratio of green buttons to purple buttons is 5: 4 The ratio of blue buttons to purple buttons is 3: 2 What is the ratio of green buttons to blue buttons? GREEN 5 : BLUE 3 6 PURPLE 4 GREEN 5 : : BLUE 6 : : PURPLE 2 4 BLUE 6 × 2
In a bag there are some cubes… The ratio of blue cubes to green cubes is 1: 5 The ratio of yellow cubes to green cubes is 2: 3 What is the ratio of blue cubes to yellow cubes? × 3 BLUE 1 3 : : YELLOW 2 10 GREEN 5 15 BLUE 3 : GREEN 15 BLUE 3 : : : : GREEN 3 15 YELLOW 10 × 5
In a bag there are some shapes… The ratio of triangles to octagons is 2: 7 The ratio of squares to octagons is 4: 3 What is the ratio of triangles to octagons to squares? × 3 TRI. 2 6 : : TRI. 6 OCT. 7 21 : OCT. 21 SQ. 4 28 : : : SQ. 28 OCT. 3 21 × 7
In an aquarium there are some fish… The ratio of yellow fish to black fish is 3: 1 The ratio of yellow fish to green fish is 9: 5 What is the ratio of black fish to green fish? × 3 YELLOW 3 9 : : YELLOW 9 BLACK 1 3 YELLOW 9 : BLACK 3 : : : GREEN 5
In a box there are some biscuits… The ratio of round biscuits to square biscuits is 7: 2 The ratio of square biscuits to rectangular biscuits is 10: 7 What is the ratio of round biscuits to square biscuits to rectangular biscuits? × 5 ROUND SQUARE 10 7 2 35 10 : : ROUND SQUARE 35 10 : : : REC. 7
In a box there are some shapes… The ratio of rectangles to circles is 5: 6 The ratio of circles to triangles is 3: 4 What is the ratio of rectangles to triangles? REC. 5 : CIRCLES TRIANGLES 3 4 6 8 CIRCLES 6 REC. 5 : : : CIRCLES TRIANGLES 6 8 REC. 5 : TRIANGLES 8 : × 2
In a bag there are some cubes… The ratio of white cubes to red cubes is 1: 4 The ratio of red cubes to green cubes is 3: 2 What is the ratio of white cubes to green cubes? × 3 WHITE 1 3 : : RED 3 12 RED 4 12 WHITE 3 : WHITE 3 RED 12 : : : : GREEN 2 8 GREEN 8 × 4
In a bag there are some pens… The ratio of white pens to black pens is 2: 5 The ratio of black pens to red pens is 4: 3 What is the ratio of white pens to red pens? × 4 WHITE 2 8 : : BLACK 4 20 BLACK 5 20 WHITE 8 : BLACK 20 WHITE 8 : : RED 15 : : RED 15 RED 3 15 × 5
In a pet store there are some pets… The ratio of dogs to cats is 4: 5 The ratio of fish to dogs is 9: 5 What is the ratio of dogs to cats to fish? × 5 DOGS 4 20 : : CATS 5 25 DOGS 20 : CATS 25 FISH 9 36 DOGS 5 20 : : : FISH 36 × 4
In a school there are some students… The ratio of blonde students to black-haired students is 5: 7 The ratio of blonde students to brown-haired students is 2: 5 What is the ratio of black-haired students to brown-haired students? × 2 BLONDE 5 10 : : BLONDE BROWN 2 5 10 25 BLACK 7 14 : : BLONDE BLACK BROWN 10 14 25 BLACK BROWN 14 25 : : : × 5
Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk
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