Math practice · reimagined
Exponents Game
This exponent game runs from 22 = 4 on its first level to Olympic powers whose answers reach seven digits, such as 220. A small raised number hides a chain of multiplications, so unpack it before your rival does and your fighter strikes first.
Ages 4–99+ · no download · plays in your browser · 23 languages
What is an exponent?
An exponent is the raised number in a power such as 25, and it counts how many times the base, the number below it, is written in a multiplication. We read 25 as “2 to the power of 5”: five 2s multiplied together make 32. Picture a cell that splits in two every hour: 5 hours later there are 32.
Every level of Powers
- Small powersGrade 6 · 11 yrsSquares up to 102, small powers of 2, 3 and 4.Play free ▸
- Multiply powers of 10Grade 8 · 13 yrsAdd the exponents.Play free ▸
- Wider powersGrade 8 · 13 yrsSquares 102..202, higher powers of 2 to 5.Play free ▸
- Big powersGrade 9 · 14 yrsCubes 63..153, squares 212..302, high powers of 2 to 5.Play free ▸
- Mixed powersGrade 9 · 14 yrsAdd or subtract two powers, e.g. 23 + 32.Play free ▸
- Exponential growthGrade 9 · 14 yrsP × 2tPlay free ▸
- Rational exponentGrade 11 · 16 yrsa(1/n) = n√aPlay free ▸
- Mega powersOLYMPICMassive squares, big cubes, high exponents.Play free ▸
Example: what is 3⁴, or 3 to the power of 4?
- The base is 3 and the exponent is 4, so four 3s are multiplied: 3 × 3 × 3 × 3.
- Work from the left: 3 × 3 = 9, and then 9 × 3 = 27.
- The last 3 turns 27 into 27 × 3 = 81.
- So 34 = 81, and 81 is the number you type on the keypad.
Learn it step by step
A power is a shortcut for multiplying a number by itself again and again.
The little raised number tells you how many copies to multiply. 23 means 2 × 2 × 2 = 8 (three 2s). 52 ("five squared") means 5 × 5 = 25.
Multiply the base by itself the right number of times, and type the result.
Tips and common mistakes
- Squares grow by the odd numbers in order: 1, 4, 9, 16, 25 step up by 3, 5, 7, 9. So 72 = 36 + 13 = 49.
- A common mistake on the mixed level is merging two powers: 23 + 22 is not 25. Work out each one first, then add: 8 + 4 = 12.
- Make it a squares game on a walk or a car ride: call out a number from 1 to 20, your child answers with its square, then swap roles.
How to play
A power such as 92 or 25 appears with its exponent raised, and you type its value on the keypad. Other levels twist the question: 105 × 101 = 10? wants just the exponent, and 23 − 32 needs the minus key for −1. Answer first and Mushroom strikes, harder the less time you take.
— Quick answers —
Powers: the short FAQ
- What does squared mean in math?
- Squared means multiplied by itself, so 62 is read “six squared” and equals 6 × 6 = 36. The name comes from a shape: 36 tiles laid 6 by 6 form a square. Cubed works the same way with three equal factors, so 63 = 216. Going backwards from a square gives a square root, written √, so √36 = 6. Powers and roots are two directions of one idea.
- How do you calculate exponents in your head?
- Multiply in stages and keep only the running result. For 44, say 4, 16, 64, 256: each step is the last result times 4. For a two-digit square such as 232, split the number into 20 and 3. Then 202 = 400, 2 × 20 × 3 = 120 and 32 = 9 add up to 529.
- How do you remember the powers of 2?
- Each power of 2 is double the one before, so you can rebuild the whole row from 21 = 2: 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024. That last one, 210 = 1024, is worth knowing by heart. It is just over a thousand, and multiplying it by itself gives 220 = 1048576, just over a million.
- Why does my child think 3² is 6?
- Many children read 32 as 3 × 2, because the two digits sit side by side and multiplying them is a familiar habit. The raised 2 is a count, not a factor: it asks for two 3s, so 32 = 3 × 3 = 9. Writing each power out in full for a while breaks the habit: 53 becomes 5 × 5 × 5 = 125, never 15.
- Is this exponent game free to use in a math lesson?
- Yes, it is free for the whole class: the levels run in a browser window, so pupils need no account and the school installs nothing. For a burst of exponent practice, write 24, 42, 33 and 52 on the board and ask pupils to rank them before calculating. The answers, 16, 16, 27 and 25, reveal a surprise tie. The schools plan, charged per student, shows the teacher on one dashboard which pupils are getting faster at powers.
