6 topics · 18+ quizzes · 3 levels
Every quiz in OpenMath
Curriculum-aligned practice from first sums to fractions — and always growing. Every quiz comes in three levels:
EasyMediumHard
➕
Arithmetic
Addition and subtraction within 20 and 100, round tens, and two-digit ± one-digit.
- Addition within 20 ages 6–8
- Subtraction within 20 ages 6–8
- Round tens (add & subtract) ages 7–8
- Addition & subtraction within 100 ages 7–9
- Two-digit ± one-digit ages 7–9
✖️
Multiplication & division
Times tables, division with and without a remainder, doubles, and sums of products.
- Times tables (3, 4, 6) ages 7–9
- Multiplication 1–10 ages 7–9
- Division without remainder ages 8–10
- Division with remainder ages 8–10
- Doubles & sums of products ages 7–10
🔢
Counting patterns
Continue the sequence — counting by 2s and by 5s.
- Count by 2 (6, 8, 10, ?, ?) ages 7–8
- Count by 5 (5, 10, 15, ?, ?) ages 7–8
🏛️
Roman numerals
Read and write Roman numerals, both directions.
- Roman → Arabic (XIV = ?) ages 7–9
- Arabic → Roman (27 = ?) ages 7–9
📏
Measurement
Unit conversions and adding lengths.
- Convert dm → cm ages 7–9
- Convert m → cm ages 7–9
- Add lengths (35 cm + 12 cm) ages 7–9
🍰
Fractions
Basic fractional arithmetic, rendered beautifully with KaTeX.
- Basic fractions (add, subtract, ×whole) ages 8–14
New quiz types are added regularly — the catalog grows as kids progress.
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