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Mystery Number

Clues appear one at a time: I'm even, I'm greater than 40, my digits add up to 9. Students stand up when they think they know the number.

Grades 1–8Clue puzzleWhole classNo student loginsWorks offline

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Screenshot of Mystery Number in the middle of a game

What students practice

5 levels: add & subtract within 20, times tables & division facts, multi-digit operations, fractions, decimals & percents, integers & one-step equations

Standards

OAS 1.N.2.1 · 2.N.2.1 · 4.N.2.2–2.3 · 5.N.3.1 · 5.N.3.3 · 7.N.2.1–2.4 · 7.A.3.1

Common Core: 1.OA.C.6 · 2.OA.B.2 · 3.OA.C.7 · 4.NBT.B.4–6 · 4.NF.B.3 · 5.NBT.A.2 · 5.NBT.B.7 · 6.RP.A.3c · 6.EE.B.7 · 7.NS.A.1–2

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How it works

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