Finding 10 More or Less than a Number
Maths: Year 3 & 4 National Curriculum, topic 1.1.4
Finding 10 More or Less than a Number
When we add or take away 10 from a number, we need to focus on the tens column.
Find 10 more
- To add 10, we add 1 to the number in the tens column:
- 569 + 10 = 579
Find 10 less
- To take away 10, we subtract 1 from the number in the tens column:
- 569 - 10 = 559
Adding to 9
- Sometimes we want to add 10 and the number in the tens column is 9.
- To do this, change the 9 to a 0 and add 1 to the number in the hundreds column:
- 191 + 10 = 201
Taking away from 0
- Sometimes we want to take away 10 and the number in the tens column is 0.
- To do this, change the 0 to a 9 and take away 1 from the number in the hundreds column:
- 300 - 10 = 290
Test yourself on Finding 10 More or Less than a Number
What is 10 more than 34?
What is 10 less than 133?