Plenty in 20
Plenty of numeracy practice in 20 questions. A free collection of interactive maths practice pages covering Year 1 through to GCSE, focusing on the essential number skills students need for mathematical success.
How to Use Plenty in 20
Questions regenerate infinitely at the click of a button, providing unlimited practice on the fundamentals.
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Teachers
Use Full Screen mode to display all 20 questions on your projector, then work through them together using Score Mode to track performance in real time. Or print as a 1-page write-on worksheet.
Tip: Perfect for Do Now starters or weekly low-stakes quizzes!
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Students
Hit 🔊 to hear questions read aloud, use 👁 to check answers instantly, and open the Focus Box for full working when stuck.
Tip: If a level is too hard, move down to build confidence first!
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Parents
Levels use gemstone names rather than year groups, so there’s no pressure — find where your child feels confident and build from there.
Tip: Start one or two levels below their age to build confidence.
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Why Gemstones?
Each Plenty in 20 is designed with a year group in mind, but they are purposely named with gemstones so you can choose the most appropriate level without anyone knowing.
Core Functionality
- 🔄 New Questions — Generate a fresh set of 20 questions instantly
- 🔀 Shuffle — Randomise the order of your current questions
- 👁 Show Answers — Reveal answers individually or all at once
- 🔍 Focus Box — View any question enlarged with full working
- 🔊 Read Aloud — Hear questions spoken for accessibility
- ✓✗ Score Mode — Track correct and incorrect responses live
- ⏱ Timer — Set a countdown challenge from 1 to 10 minutes
- ⛶ Full Screen — Display all 20 questions for projection
- 🖨 Worksheet — Print a ready-to-use A4 worksheet with answers
Jump to Level
💎 Primary (Years 1-6)
Building strong foundations in number from the very beginning
Quartz
Year 1 content
- Count forwards and backwards within 20
- Number bonds within 10 and to 10
- Add and subtract single digits
- Doubles and halves to 20
- Count in 2s, 5s, and 10s
- Place value with teens
- Compare and order to 20
Opal
Year 2 content
- Number bonds to 20
- Add and subtract 2-digit numbers
- 2, 5, and 10 times tables
- Division by 2, 5, and 10
- Find halves and quarters
- Double 2-digit numbers
- Place value to 100
Amber
Year 3 content
- 3, 4, and 8 times tables
- Add and subtract 3-digit numbers
- Multiply and divide 2-digit by 1-digit
- Fractions: add, subtract, equivalent
- Place value to 1000
- Round to nearest 10 and 100
- Number bonds to 100
Jade
Year 4 content
- Written methods for all operations
- 6, 7, 9, 11, 12 times tables
- Factor pairs
- Fractions and equivalent fractions
- Decimal tenths
- Negative numbers introduction
- Multiply and divide by 10 and 100
Topaz
Year 5 content
- Fractions: different denominators
- Mixed numbers and improper fractions
- Add and subtract decimals
- Percentage of amounts (10%, 25%, 50%)
- Square and cube numbers
- Prime numbers to 100
- Order of operations
Ruby
Year 6 content
- Multiply and divide fractions
- Percentage of amounts (any)
- Percentage increase and decrease
- Ratio: simplify and share
- Negative number operations
- Order of operations with brackets
- HCF and LCM
💎 Secondary (Years 7-9)
Consolidating and extending number skills for Key Stage 3
Sapphire
Year 7 content
- Negative number operations
- Convert between FDP
- Fractions: all operations
- Percentage of amounts
- Percentage increase/decrease
- Square and cube numbers
- Simplify and share in ratios
Emerald
Year 8 content
- Multiply and divide decimals
- Mixed number operations
- Express as a percentage
- Three-part ratios
- Direct and inverse proportion
- Calculate with powers
- Convert between metric units
Pearl
Year 9 content
- Round to decimal places and sig figs
- Estimation by rounding
- Complex fraction calculations
- Reverse percentages
- Simple interest
- Percentage multipliers
- Proportion problems
💎 GCSE (Years 10-11)
Essential numeracy for GCSE success — Foundation and Higher tiers
Amethyst
Year 10 Foundation
- Standard form
- Percentage increase/decrease
- Fraction operations
- Powers
- Sharing in a ratio
- Convert between FDP
- Best buy problems
Onyx
Year 10 Higher
- Rounding large numbers
- Index laws
- Negative and zero indices
- Fractional indices
- Compound interest and depreciation
- Coordinate problems
- Simplify surds
Garnet
Year 11 Foundation
- Standard form calculations
- Multiple percentages
- Ratio and proportion problems
- Exchange rates
- Speed, distance, time
- Midpoints
- Fractions of an amount backwards
Diamond
Year 11 Higher
- Surds: simplify, multiply, divide, add
- Rationalise denominators
- Fractional and negative indices
- Upper and lower bounds
- Error intervals
- Direct and inverse proportion
- Recurring decimals to fractions
More levels and skills coming throughout 2026 — keep checking back! 💎