Across
- 5. A shape with three sides.
- 6. The difference between the biggest number and the smallest number in a set.
- 9. Lists of numbers that follow a pattern, like 2, 4, 6, 8.
- 10. How many minutes are in half an hour?
- 11. A shape with four equal sides and four right angles.
Down
- 1. How many months are in a year?
- 2. The amount of space inside a shape, find it by doing length x height.
- 3. The space between two lines that meet at a point, measured in degrees.
- 4. Add up all the numbers, then divide by how many there are, to find this kind of average.
- 7. How many degrees are in a right-angle?
- 8. A number with a point in it, like 3.5.