Find 1, 10, 100 and 1000 more or less
Learn how to find 1, 10, 100 or 1000 more or less than a given number.
This lesson includes:
a catch-up quiz
one learning summary with slideshow
To get started, let's see how well you know this topic already. Take the quiz below to find out.
When finding 1, 10, 100 or 1000 more or less than a number, place value is very important.
Finding 1 more or less
When you are finding 1 more or less, only the ones column changes.
Finding 10 more or less
When you are finding 10 more or less, only the tens column changes.
Finding 100 more or less
When you are finding 100 more or less, only the hundreds column changes.
Finding 1000 more or less
When you are finding 1000 more or less, only the thousands column changes.
The only time these rules change is when you bridge another place value, for example:
10 more than 1892 is 1902.
Try solving these word problems by applying your knowledge.
Charlotte counts back in thousands from 8723. Which number does she say?
A - 7623
B - 2723
C - 8123
Look at the numbers carefully. Which one has the same digits in the hundreds, tens and ones, but a different number in the thousands?
It’s B - 2723. The other two have decreased in hundreds!
Look at this sequence:
Now look carefully at each of the digits. Which place value is changing each time?
It is the tens!
The sequence decreases by 10 each time.
Have a look at these other resources.