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Ratio foundations · grades 5–6

Simplifying Ratios Worksheet Generator

Create fresh ratio-reduction practice where every pair is built from a coprime base ratio and one whole-number scale factor. The answer key therefore always shows the ratio in lowest terms.

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Simplifying Ratios Practice

Simplify ratios · Medium whole numbers · Seed 261401

1.

Simplify 45 : 99 = ____

2.

Simplify 88 : 104 = ____

3.

Simplify 49 : 70 = ____

4.

Simplify 112 : 72 = ____

5.

Simplify 6 : 26 = ____

6.

Simplify 55 : 40 = ____

7.

Simplify 12 : 21 = ____

8.

Simplify 110 : 70 = ____

9.

Simplify 39 : 36 = ____

10.

Simplify 24 : 78 = ____

11.

Simplify 80 : 50 = ____

12.

Simplify 35 : 98 = ____

13.

Simplify 20 : 90 = ____

14.

Simplify 18 : 12 = ____

15.

Simplify 45 : 126 = ____

16.

Simplify 78 : 42 = ____

17.

Simplify 60 : 54 = ____

18.

Simplify 42 : 48 = ____

Exact-construction rule: simplified ratios begin from coprime terms, ratio tables and proportions use whole-number scale factors, unit prices use integer cents, and percent proportions are built from exact part-whole relationships.
Teaching note 1

Treat a ratio like a fraction for reduction: divide both terms by the same greatest common factor.

Teaching note 2

Ask students to check that the simplified terms have no common factor greater than 1 before moving on.

Teaching note 3

Use the small set for structure first, then move to medium or large numbers after the reduction process is secure.

All ratio & proportion skills →

Mix simplifying, tables, unit rates, proportions, and percent proportions in one generator.

Connect ratios to percents

Practice part / whole = percent / 100 after equivalent ratios are secure.

Frequently asked questions

Are simplified answers always in lowest terms?

Yes. Each problem starts from a coprime base pair and scales both terms by the same factor.

Can I increase the number size?

Yes. Small, medium, and large sets increase both the base terms and possible scale factors.

Can I make another version?

Yes. New problems changes the seed while keeping the selected skill and number range.

Is an answer key available?

Yes. The direct PDF can append a separate answer-key page.