Science quiz
Square roots from 1 to 20
Twenty perfect squares on one sheet, in a different order every day. Work down the columns, typing the whole number that squares to give each one.
- Format
- Type them all
- Items
- 20 answers
- Limit
- 1:30
- Level
- Medium
- Checked
- 2026.10.03
- Answers
- 20
- Time limit
- 1:30
- Order
- One at a time, no skipping
- Matching
- Case and accents ignored
- Answer each item in turn; the next appears when you get it right.
- Press Enter to check a guess.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Type the square root of each number.
| Question | Root |
|---|---|
| √1 | Not found yet |
| √4 | Not found yet |
| √9 | Not found yet |
| √16 | Not found yet |
| √25 | Not found yet |
| Question | Root |
|---|---|
| √36 | Not found yet |
| √49 | Not found yet |
| √64 | Not found yet |
| √81 | Not found yet |
| √100 | Not found yet |
| Question | Root |
|---|---|
| √121 | Not found yet |
| √144 | Not found yet |
| √169 | Not found yet |
| √196 | Not found yet |
| √225 | Not found yet |
| Question | Root |
|---|---|
| √256 | Not found yet |
| √289 | Not found yet |
| √324 | Not found yet |
| √361 | Not found yet |
| √400 | Not found yet |
About this quiz
The square root of a number is the value that, multiplied by itself, gives that number. Every number here is a perfect square, so every root is a whole number from 1 to 20.
- A perfect square ending in 6 has a root ending in 4 or 6.
- The squares of 11 to 19 run from 121 to 361.
- The order changes every day.
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| No. | Quiz | Section | Format | Items | Added |
|---|---|---|---|---|---|
| 01 | Minute maths: addition Forty addition questions and sixty seconds on the clock. Type each answer; the next question appears the moment you are right. No skipping. Science / Type them all / 40 answers | Science | Type them all | 40 | 2026.10.03 |
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