Discover the magic hidden inside numbers! ✨
When you multiply a number by itself, you get a square number!
Think of a square number as dots arranged in a perfect square grid.
4 × 4 = 16 means you can arrange 16 dots in a 4-by-4 square! 🔵🔵🔵🔵
👆 Click any card to see the square pattern!
The square root undoes the squaring — it goes backwards!
👇 Click each card to reveal the square root!
A cube number means multiplying the same number three times!
Think of building a 3D cube with unit blocks! 🧊
The cube root reverses the cubing — just like square root but for cubes!
The small 3 in ³√ tells you it's a cube root, not a square root!
👇 Tap to reveal the cube root!
Square roots vs Cube roots — side by side
| Expression | Square | Cube | Root |
|---|---|---|---|
| n = 2 | 2² = 4 | 2³ = 8 | √4=2, ³√8=2 |
| n = 3 | 3² = 9 | 3³ = 27 | √9=3, ³√27=3 |
| n = 4 | 4² = 16 | 4³ = 64 | √16=4, ³√64=4 |
| n = 5 | 5² = 25 | 5³ = 125 | √25=5, ³√125=5 |
Not all numbers are perfect squares — but we can estimate!
Step 1: Find the perfect squares around 79
Step 2: So √79 is between 8 and 9
Step 3: Is it closer to 8 or 9?
79 is much closer to 81 (9²) than to 64 (8²), so √79 ≈ 8.9
Result: Since 215 is closer to 225 than to 196 → √215 ≈ 14.7
Cute tricks to remember everything!
Watch the steps unfold — click to reveal each step!
4 fun activities to sharpen your skills!
Type any number to instantly see its square and cube roots!
15 questions • Get ready!
10 harder questions • Word problems • Estimation