This Grade 5 hard-1 worksheet challenges students with multi-step ratio word problems involving classes, recipes, sports rosters, and bags of marbles. Learners distinguish part-to-part from part-to-whole ratios and find missing values in equivalent ratios using careful scaling. Multiple-choice items test reasoning under pressure, while fill-in problems require dividing the total into equal parts before answering each question carefully and writing the answer in the requested form.

Style:
Busy Bee
Ratios Introduction
Grade 5
★ Part A: Multiple Choice
Circle the best answer for each question.
1. A class has 12 boys and 16 girls. What is the part-to-part ratio of boys to girls in simplest form?
 A) 3:4
 B) 4:3
 C) 12:28
 D) 3:7
2. A bag has 5 red and 3 blue marbles. What is the part-to-whole ratio of red marbles to all marbles?
 A) 3:8
 B) 5:8
 C) 5:3
 D) 8:5
3. A recipe uses flour and sugar in a 3:2 ratio. If you use 9 cups of flour, how much sugar do you need?
 A) 4 cups
 B) 5 cups
 C) 6 cups
 D) 8 cups
4. In a class of 28 students, the ratio of boys to girls is 3:4. How many boys are in the class?
 A) 7
 B) 10
 C) 16
 D) 12
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) If 2:5 is the ratio of cats to dogs and there are 10 cats, then there are 25 dogs.
2) A team has 9 wins and 6 losses; the simplest part-to-part ratio of wins to losses is 3:2.
3) A jar has 4 red, 3 blue, and 5 green beads; the part-to-whole ratio of blue to all is 3:12.
4) Paint mix is 2:3 blue to white. For 12 cups of white, you need 8 cups of blue.
5) In a class of 30, the ratio of boys to girls is 2:3; the number of girls is 18.
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9 Questions
12-18 minutes
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