Solve part-to-part and part-to-whole ratio problems
Use the ratio to find how many items one part stands for. Then multiply that by the number of parts the question asks about.
Loading a question…
You've done today's 10 free questions.
Come back tomorrow for 10 more, or get unlimited practice with a membership.
Want more today? Print 20 more questions free, with the answers.
Already a member? Sign in.
See worked examples
In a jar, the ratio of red marbles to blue marbles is 2:3. There are 6 red marbles. How many blue marbles are there?
Answer: 9
In a pencil case, the ratio of black pens to blue pens is 3:1. There are 3 blue pens. How many black pens are there?
Answer: 9
In a bookshelf, the ratio of fiction books to poetry books is 3:4. There are 15 fiction books. How many poetry books are there?
Answer: 20
Tip: Use the ratio to find how many items one part stands for. Then multiply that by the number of parts the question asks about.
Print a worksheet of this skill New questions and an answer key, free.
Up next
- Next in this topic Find the total when a ratio and one part are given Grade 6
- Ready for more Word problems: a plant grows each week Grade 7
- Need a warm-up? Money review word problems Grade 5
Print a free worksheet with answers (20 questions).
Learn it hands-on
- Mix It, Pace It: Ratio, Rate and Percent Grades 6–7 · printable lessons
Practice without limits
Members practice as much as they like, every day, and get the printable packs and lessons too.