Across
- 5. A way to write numbers by showing the value of each digit
- 6. The period after the ones period in the base ten number system
- 7. Each group of three digits in a multi-digit number
- 8. A way to write numbers by using words
Down
- 1. Operations that undo each other
- 2. 3400
- 3. A number that is close to an exact amount.
- 4. To replace a number with another number that tells about how many or how much