$Percent of a number: stretch: math worksheet for Grade 8, page 1 preview$

Math worksheet · Mathematics

Percent of a number: stretch · Grade 8

Find a percent of a number. 16 problems at a stretch level for Grade 8, with an answer key for grown-ups.

Grade 8 · ages 13 to 14
Hard
15 to 20 minutes
1 page
Free

The answer key is a separate page for grown-ups. Sign in to download it.

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The 16 problems on the sheet

Directions: Find each percent.

1. 80% of 680 =
2. 60% of 660 =
3. 15% of 440 =
4. 5% of 620 =
5. 30% of 540 =
6. 80% of 420 =
7. 15% of 100 =
8. 30% of 680 =
9. 80% of 220 =
10. 80% of 520 =
11. 40% of 640 =
12. 60% of 120 =
13. 80% of 340 =
14. 30% of 220 =
15. 5% of 220 =
16. 15% of 520 =

What your child practices

Your child practices the math skill “Ratios and scaling”: scale quantities with equivalent ratios.

Grades and ages: Grade 8, ages 13 to 14
Time: About 15 to 20 minutes
Subject: Mathematics
Level: Hard for Grade 8
Answer key: Yes, for grown-ups who sign in
Printing: 1 page, US Letter or A4, low-ink option
Updated: October 15, 2026

How to use it

Try the first question together so the format is clear. Then let your child work through the rest, showing their thinking on the page. It is one of the harder sheets for Grade 8, best once the basics of the skill are secure.

An answer key comes with it as a separate page that grown-ups download after signing in.

Tip for grown-ups: Check the first three problems together before your child carries on alone; most mix-ups show early.

Done on paper? A grown-up can record it on the child's page in PlayOwl; downloading alone doesn't count as finished.