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In this worksheet you will learn about simple ratios.
1 in every 4 beads is green.
Examples
Complete each sentence so that the beads stay in the same ratio.
2 in every 8 are green...........this is what we get in 2 groups of 4 beads
3 in every 12 are green...........this is what we get in 3 groups of 4 beads
7 in every 28 are green...........this is what we get in 7 groups of 4 beads
20 in every 80 are green...........this is what we get in 20 groups of 4 beads
It helps to know how many groups of 4 beads there are.
Question:
If there are 12 green beads, how many beads are not green?
Answer:
36
To work this question out, we can use multiplication facts:
The ratio is 3:1 (white:green)
If 12 beads are green, 1 x 12 = 12, so we do 3 x 12 = 36 to get the number of white beads.
