Ratios, ratio tables and equivalent ratios
Answers are for parents and teachers.
1
A fruit bowl has 6 bananas and 9 guavas. Write bananas to guavas, guavas to bananas, and bananas to all fruit.
Bananas to guavas 6 : 9. Guavas to bananas 9 : 6. Bananas to all fruit 6 : 15.
2
Write 6 : 9 in simplest form and find an equivalent ratio with 10 as the first term.
6 : 9 ÷ 3 = 2 : 3. Then 2 : 3 × 5 = 10 : 15.
3
A cake needs 3 eggs for every 4 cups of flour. How many eggs are needed for 12 cups of flour?
12 = 4 × 3, so eggs = 3 × 3 = 9.
4
Are 8 : 12 and 10 : 16 equivalent? Explain.
8 : 12 ÷ 4 = 2 : 3, but 10 : 16 ÷ 2 = 5 : 8. They are not equivalent.
5
Make a ratio table with 4 columns for the ratio 5 : 2.
5 : 2, 10 : 4, 15 : 6, 20 : 8.