Write an equivalent ratio
Key Notes :
👉 To find an equivalent ratio, multiply or divide both numbers in a ratio by the same value.
Learn with an example
✈️ Find the number that makes the ratio equivalent to 1:3.
5: ____
Complete the ratio 5:____ so that it is equivalent to 1:3.
The second number is missing from 5:___. So, compare the first numbers of the two ratios.
1:3
5:__
To get 5 from 1, multiply by 5.
So, to get ____ from the second number in 1:3, multiply by 5.
3 . 5=15
This means 5:15 and 1:3 are equivalent ratios.
✈️ Find the number that makes the ratio equivalent to 1:2.
9: ____
Complete the ratio 9:_____ so that it is equivalent to 1:2.
The second number is missing from 9:_____. So, compare the first numbers of the two ratios.
1:2
9:___
To get 9 from 1, multiply by 9.
So, to get _____ from the second number in 1:2, multiply by 9.
2 . 9=18
This means 9:18 and 1:2 are equivalent ratios.
✈️ Find the number that makes the ratio equivalent to 1:8.
8:____
Complete the ratio 8______: so that it is equivalent to 1:8.
The second number is missing from 8:____. So, compare the first numbers of the two ratios.
1:8
8:_____
To get 8 from 1, multiply by 8.
So, to get _____ from the second number in 1:8, multiply by 8.
This means 8:64 and 1:8 are equivalent ratios.
Let’s practice! 🖊️
