Science quiz
Click the sums that make 100
Thirty short sums: 12 of them make 100 and the rest just miss. Click the ones that make 100.
- Format
- Click the grid
- Items
- 12 to click
- Limit
- 1:30
- Level
- Medium
- Checked
- 2026.10.03
- To find
- 12
- Time limit
- 1:30
- Minefield
- One wrong click ends it
- Click every valid item, in any order.
- Decoys look plausible. Read carefully.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Click every sum that makes 100, and nothing else. The grid appears when you start.
About this quiz
Every sum on the board lands on 100 or within a few of it, so a rough estimate is not enough. Work each one out before you click.
- 12 sums make 100 and 18 do not.
- The right sums use adding, taking away and multiplying.
- The board is the same for everyone; only its layout is shuffled.
More quizzes like this
| No. | Quiz | Section | Format | Items | Added |
|---|---|---|---|---|---|
| 01 | Click the sums that make 12 Thirty short sums, and 12 of them come to exactly 12. Click every one that does. A sum that comes to anything else ends the game. Science / Click the grid / 12 to click | Science | Click the grid | 12 | 2026.10.03 |
| 02 | Click the sums that make 13 Thirty short sums, and 12 of them come to exactly 13. Click every one that does. A sum that comes to anything else ends the game. Science / Click the grid / 12 to click | Science | Click the grid | 12 | 2026.10.03 |
| 03 | Click the sums that make 50 Thirty short sums, and 12 of them come to exactly 50. Click every one that does. A sum that comes to anything else ends the game. Science / Click the grid / 12 to click | Science | Click the grid | 12 | 2026.10.03 |