Ratio Basics

  • 6th Grade
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| By Thames
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Thames
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Quizzes Created: 7682 | Total Attempts: 9,547,133
| Attempts: 26 | Questions: 15 | Updated: Dec 10, 2025
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1) Can you simplify the ratio 12:18?

Explanation

Divide both by 6 → 12 ÷ 6 = 2, 18 ÷ 6 = 3.

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About This Quiz
Ratio Basics - Quiz

Ever split snacks between friends or compared pencils to erasers in your box? That’s ratios! In this quiz, you’ll practice simplifying simple ratios step by step to see how quantities relate. Take this quiz to master the basics of ratios with easy, real-life examples.

2) The ratio 15:20 simplifies to 3:4.

Explanation

Divide both by 5 → 15 ÷ 5 = 3, 20 ÷ 5 = 4.

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3) The ratio of boys to girls in a class is 10:25. Can you simplify it?

Explanation

Divide both by 5 → 10 ÷ 5 = 2, 25 ÷ 5 = 5.

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4) Which is the simplest form of 9:12?

Explanation

Divide both by 3 → 9 ÷ 3 = 3, 12 ÷ 3 = 4.

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5) In a recipe, the ratio of flour to sugar is 6:9. Simplify the ratio.

Explanation

Divide both by 3 → 6 ÷ 3 = 2, 9 ÷ 3 = 3.

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6) Simplify 9:15.

Explanation

Divide both by 3 → 9 ÷ 3 = 3, 15 ÷ 3 = 5.

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7) Simplify the ratio 100:400.

Explanation

Divide both by 100 → 100 ÷ 100 = 1, 400 ÷ 100 = 4.

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

Explanation

Divide both by 22 → 44 ÷ 22 = 2, 66 ÷ 22 = 3.

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9) The number of apples to oranges is 8:12. Simplify this ratio.

Explanation

Divide both by 4 → 8 ÷ 4 = 2, 12 ÷ 4 = 3.

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10) Simplify 35:49.

Explanation

Divide both by 7 → 35 ÷ 7 = 5, 49 ÷ 7 = 7.

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11) If a class has 12 boys and 16 girls, what is the simplified ratio of boys to girls?

Explanation

Divide both by 4 → 12 ÷ 4 = 3, 16 ÷ 4 = 4.

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12) Simplify the ratio 21:14.

Explanation

Divide both by 7 → 21 ÷ 7 = 3, 14 ÷ 7 = 2.

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13) 30:45 simplifies to 2:3.

Explanation

Divide both by 15 → 30 ÷ 15 = 2, 45 ÷ 15 = 3.

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14) Simplify 18:42.

Explanation

Divide both by 6 → 18 ÷ 6 = 3, 42 ÷ 6 = 7.

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15) Which of these ratios is equivalent to 4:6?

Explanation

4:6 simplifies to 2:3. Multiply → 6:9 is also equivalent.

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Can you simplify the ratio 12:18?
The ratio 15:20 simplifies to 3:4.
The ratio of boys to girls in a class is 10:25. Can you simplify it?
Which is the simplest form of 9:12?
In a recipe, the ratio of flour to sugar is 6:9. Simplify the ratio.
Simplify 9:15.
Simplify the ratio 100:400.
The simplest form of 44:66 is 2:3.
The number of apples to oranges is 8:12. Simplify this ratio.
Simplify 35:49.
If a class has 12 boys and 16 girls, what is the simplified ratio of...
Simplify the ratio 21:14.
30:45 simplifies to 2:3.
Simplify 18:42.
Which of these ratios is equivalent to 4:6?
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