 Add or Subtract 100, 10 or 1 To or From a Number (6)

In this worksheet, students add or subtract 100, 10 or 1 to or from a given number. Key stage:  KS 2

Curriculum topic:  Number: Number and Place Value

Curriculum subtopic:  Find 10 or 100 More or Less than a Given Number

Difficulty level:   QUESTION 1 of 10

In this worksheet you have to add or subtract 100, 10 or 1 to or from a number.

When we add or subtract 100, it is the hundreds digit that we change.

When we add or subtract 10, it is the tens digit that we change.

When we add or subtract 1, it is the units digit that we change.

Remember that other digits may have to change too.

Example 1

What number is 100 less than 750?

Reduce 7 hundred by 1 hundred to get 6 hundred...

750 becomes 650

Example 2

What number is 10 more than 539?

Increase 3 tens by 1 ten to get 4 tens...

539 becomes 549

Example 3

What number is 1 less than 539?

Reduce 9 units by 1 unit to get 8 units...

539 becomes 538

Example 4

What number is 10 less than 405?

Here we have to be careful, because we can't reduce the tens digit by 1.

So include the hundreds digit.

Think of it as reducing 40 tens by 1 ten to get 39 tens.

405 becomes 395

What number is 100 more than 584?

What number is 100 more than 42?

What number is 10 more than 775?

What number is 1 more than 709?

What number is 10 less than 503?

What number is 1 less than 720?

What number is 1 less than 900?

What number is 10 less than 700?

What number is 10 more than 398?

What number is 100 more than 333?

• Question 1

What number is 100 more than 584?

684
EDDIE SAYS
Increase 5 hundred by 1 hundred to get 6 hundred...
584 becomes 684
• Question 2

What number is 100 more than 42?

142
EDDIE SAYS
Increase 0 hundreds by 1 hundred to get 1 hundred...
042 becomes 142
• Question 3

What number is 10 more than 775?

785
EDDIE SAYS
Increase 7 tens by 1 ten to get 8 tens...
775 becomes 785
• Question 4

What number is 1 more than 709?

710
EDDIE SAYS
Increase 9 units by 1 unit to get 10 units...
709 becomes 710
• Question 5

What number is 10 less than 503?

493
EDDIE SAYS
Reduce 50 tens by 1 ten to get 49 tens...
503 becomes 493
• Question 6

What number is 1 less than 720?

719
EDDIE SAYS
Reduce 20 units by 1 unit to get 19 units...
720 becomes 719
• Question 7

What number is 1 less than 900?

899
EDDIE SAYS
Reduce 900 units by 1 unit to get 899 units...!
900 becomes 899
• Question 8

What number is 10 less than 700?

690
EDDIE SAYS
Reduce 70 tens by 1 ten to get 69 tens...
700 becomes 690
• Question 9

What number is 10 more than 398?

408
EDDIE SAYS
Increase 39 tens by 1 ten to get 40 tens...
398 becomes 408
• Question 10

What number is 100 more than 333?