  ### Comprehensive & curriculum aligned

In this worksheet, students must add 1000 or subtract 1000 from, a four-digit number. Key stage:  KS 2

Curriculum topic:   Number: Number and Place Value

Curriculum subtopic:   Find 1000 More or Less than a Given Number

Difficulty level:   #### Worksheet Overview

When we add 1000 to a 4-digit number, we must increase the digit in the Thousands column by 1.

Here is the number 1623 shown on a Thousands Hundreds Tens Ones abacus.

*Notice how the abacus says units. Units are another word for ones. When we add 1000 we add an extra number to the Thousands column. 1623 + 1000 = 2623

Example

5028

We increase the 5 in the Thousands column by 1 to get 6 in that column.

5028 + 1000 = 6028

When we subtract 1000 from a 4-digit number, we must decrease the digit in the Thousands column by 1.

Here is the number 4705 shown on a Thousands Hundreds Tens Ones abacus. When we subtract 1000 from it, we take away one number from the Thousands column. 4705 - 1000 = 3705

Example 1

Subtract 1000 from:

5097

We decrease the 5 in the Thousands column by 1 to get 4 in that column.

5097 - 1000 = 4097

Example 2

Subtract 1000 from:

1060

We decrease the 1 in the Thousands column by 1 to get 0 in that column.

Remember to leave off any zeros on the left hand side of a number.

1060 - 1000 = 0060 = 60

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