Ratio Proportion Quiz: Master Ratio Proportion Quiz

  • 6th Grade,
  • 7th Grade
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Quizzes Created: 8156 | Total Attempts: 9,588,805
| Attempts: 25 | Questions: 20 | Updated: Dec 17, 2025
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Question 1 / 20
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1) Simplify the ratio 18:24.

Explanation

Divide both terms by 6 → 3:4.

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About This Quiz
Ratio Proportion Quiz: Master Ratio Proportion Quiz - Quiz

What does it mean for two ratios to form a true proportion? In this quiz, you’ll explore how balanced ratios help solve problems involving scale, similarity, and comparison. You’ll practice setting up proportion equations, use cross-multiplication carefully, and interpret your results in clear, meaningful contexts. As you progress, you’ll see... see morehow proportional reasoning reveals relationships between quantities and helps you approach a wide range of mathematical and real-world problems with confidence.
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2) The ratio 15:20 simplifies to 3:4.

Explanation

15:20 ÷5 → 3:4. True.

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3) Which is the simplest form of 4:6?

Explanation

4:6 ÷2 → 2:3.

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4) A recipe uses 300 g flour and 500 g sugar. Simplify flour:sugar.

Explanation

300:500 ÷100 → 3:5.

Submit

5) The ratio 28:35 is the same as 4:5.

Explanation

28:35 ÷7 → 4:5. True.

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6) Simplify 63:81 = ____.

Explanation

Divide both by 9 to get 7:9.

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7) Convert the ratio 3:4 to a fraction and decimal.

Explanation

Interpret 3:4 as 3/4; 3 ÷ 4 = 0.75.

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8) If a:b = 4:7 and a = 32, then b = ____.

Explanation

Scale factor = 32/4=8; b = 7×8 = 56.

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9) A recipe calls for milk:water:sugar = 300:200:100. Simplify the three-term ratio.

Explanation

Divide all by 100 → 3:2:1.

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10) The simplest form of 44:66 is 2:3.

Explanation

44:66 ÷22 → 2:3. True.

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11) A school has 45 boys and 60 girls. What is the simplified ratio of boys to girls?

Explanation

45:60 ÷15 → 3:4.

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12) Select all ratios equivalent to 5:8.

Explanation

Multiply both terms of 5:8 by 2,3,4,5 to get 10:16,15:24,20:32,25:40.

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13) In a class, the ratio of boys to girls is 5:7. If there are 35 girls, how many boys are there?

Explanation

Boys : Girls = 5:7. Boys = 35×(5/7)=25.

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14) A map scale is 1:250,000. How far does 3 cm represent on the ground?

Explanation

Real distance = 3×250,000 cm = 750,000 cm = 7.5 km.

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15) If the ratio of red to blue marbles is 2:3, then total parts are 5.

Explanation

Sum of parts 2+3=5.

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16) The speed ratio of a bike to a car is 3:5. If the car travels at 80 km/h, the bike travels at what speed?

Explanation

Bike = 80×(3/5)=48 km/h.

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17) A recipe requires flour:sugar = 2:5. If sugar is 150 g, flour is __ g.

Explanation

Flour = 150×(2/5)=60 g.

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18) Select all ratios equivalent to 14:21.

Explanation

14:21 simplifies to 2:3; multiplying 2:3 by 14 gives 28:42; 6:9 simplifies to 2:3.

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19) Simplify the ratio 21:14 = ____.

Explanation

Divide both by 7 to get 3:2.

Submit

20) Select all forms equivalent to 12:30.

Explanation

12:30 simplifies to 2:5 which equals 0.4; 4:10 simplifies to 2:5.

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Simplify the ratio 18:24.
The ratio 15:20 simplifies to 3:4.
Which is the simplest form of 4:6?
A recipe uses 300 g flour and 500 g sugar. Simplify flour:sugar.
The ratio 28:35 is the same as 4:5.
Simplify 63:81 = ____.
Convert the ratio 3:4 to a fraction and decimal.
If a:b = 4:7 and a = 32, then b = ____.
A recipe calls for milk:water:sugar = 300:200:100. Simplify the...
The simplest form of 44:66 is 2:3.
A school has 45 boys and 60 girls. What is the simplified ratio of...
Select all ratios equivalent to 5:8.
In a class, the ratio of boys to girls is 5:7. If there are 35 girls,...
A map scale is 1:250,000. How far does 3 cm represent on the ground?
If the ratio of red to blue marbles is 2:3, then total parts are 5.
The speed ratio of a bike to a car is 3:5. If the car travels at 80...
A recipe requires flour:sugar = 2:5. If sugar is 150 g, flour is __ g.
Select all ratios equivalent to 14:21.
Simplify the ratio 21:14 = ____.
Select all forms equivalent to 12:30.
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