Repeating Decimal Detective: Long Division Game for Grades 7‑8
Follow the remainders, catch the loop, and close the case.
Work decimal cases with long division. Pick each digit, watch the remainders pile up on your trail, and catch the loop when a remainder comes back. Then name the repeating block, decide whether a fraction ends or repeats from its denominator, measure the loop, and at the top level turn repeating decimals back into fractions. Three levels run from grade 7 long division to grade 8 conversions.
Play Repeating Decimal DetectiveFree. No signup. About 6 minutes per round.
What kids practise
Repeating Decimal Detective gives students repeated, low-pressure practice with long division, repeating decimals, terminating decimals, rational numbers, and converting decimals to fractions. It is written for grades 7-8, with levels that let younger and older players start at the right difficulty. Every question is generated fresh, so a replay is never the same, and a wrong answer shows the correct one so the round teaches as well as tests.
How it plays
Controls: Tap or click an answer, or press the number keys 1-4. Press Enter on the Next case button to continue. P pauses, M mutes.
It works with a keyboard, a trackpad or a touch screen, so it runs on school Chromebooks, tablets and phones.
Standards
Common Core State Standards for Mathematics this game supports:
- 7.NS.A.2.d
- 8.NS.A.1
For teachers
- Time: about 6 minutes per round, good for a warm-up or a center.
- Works on Chromebooks. No login, no accounts, and no personal data is collected.
- Share the page link
https://mathschools.net/play/repeating-decimal-detective.htmlwith your class.
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