Grade 8 Simple Interest Worksheets
Interest on savings and loans, using interest = amount x rate x time.
Every sheet below is generated fresh with a matching answer key. Pick one of the three levels, preview it, and print or download the PDF — no account, no watermark. For the other grade 8 percentages skills, see all percentages worksheets.
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Percentages · Grade 8
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Grade 8 · 3 pages · A4What each level generates
Grade 8 simple interest — the exact skill behind each difficulty setting, straight from the generator.
- Level 1One year
- Level 2Several years
- Level 3The total at the end
Grade levels follow the progression common to most English-language curricula — not one specific national curriculum. Every level shows exactly what it generates, so you can check the fit with your own program. See the full scope & sequence →
More Grade 8 percentages skills
Each one generates a different kind of question, with its own three levels and answer key.
- Discount and TaxShop problems: what you save, what you pay, and tax on top.
- Percent Increase and DecreaseApply a percent rise or fall and give the new amount.
- Find the Percent ChangeGiven an old price and a new one, find the percent change.
- Reverse PercentsWork backwards from a sale price to the price before the change.
- Find the PercentWork out what percent one number is of another.
- Find the WholeGiven a part and the percent it stands for, find the whole amount.
Frequently asked questions
▸What percentage topics are covered in Grade 8?
Grade 8 applies percentages to real money situations: discounts and sale prices, tax, two-step totals where a discount is followed by tax, and reverse percent — recovering an original price from a sale price. Discount and Tax covers the first three, and Reverse Percents covers the last.
▸How do you calculate a discount or sale price?
Subtract the discount percent from 100 to get the percentage you pay, then multiply. For 25% off a $60 item you pay 75%: 0.75 × 60 = $45. The price you pay level of the Discount and Tax sheet drills exactly that.
▸How do you find the original price from a sale price?
Work out the percent actually paid — 100 minus the discount — then divide the sale price by it as a decimal. After 20% off you paid 80%, so a $40 sale price means 40 ÷ 0.8 = $50. That reverse-percent skill is the Reverse Percents sheet.
▸How do you find the total for several discounted items?
Discount the price of one item first, then multiply by how many are bought. A $20 item at 10% off is 0.9 × 20 = $18 each, so three cost 3 × 18 = $54. The Discount and Tax sheet practises the discount step; press Shuffle for a new set.
▸Can I reuse the same worksheet for a whole class?
Yes. The shareable link reproduces the identical problems and answer key for everyone who opens it, so you can set the same real-world percentage sheet across a class or re-test the same student fairly weeks later.