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Add or Subtract 100, 10 or 1 To or From a Number (3)

In this worksheet, students add or subtract 100, 10 or 1 to or from a given number.

'Add or Subtract 100, 10 or 1 To or From a Number (3)' worksheet

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:  

Worksheet Overview

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?

 

Answer

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

 

750 becomes 650

 

 

Example 2

What number is 10 more than 539?

 

Answer

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

 

539 becomes 549

 

 

Example 3

What number is 1 less than 539?

 

Answer

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

 

539 becomes 538

 

 

Example 4

What number is 10 less than 405?

 

Answer

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 1 less than 410?

What number is 100 less than 517?

What number is 10 more than 178?

What number is 100 more than 826?

What number is 1 more than 504?

What number is 100 more than 526?

What number is 1 more than 499?

What number is 10 more than 499?

What number is 100 less than 499?

What number is 10 less than 482?

  • Question 1

What number is 1 less than 410?

CORRECT ANSWER
409
EDDIE SAYS
Reduce 10 units by 1 unit to get 09 units...
410 becomes 409
  • Question 2

What number is 100 less than 517?

CORRECT ANSWER
417
EDDIE SAYS
Reduce 5 hundred by 1 hundred to get 4 hundred...
517 becomes 417
  • Question 3

What number is 10 more than 178?

CORRECT ANSWER
188
EDDIE SAYS
Increase 7 tens by 1 ten to get 8 tens...
178 becomes 188
  • Question 4

What number is 100 more than 826?

CORRECT ANSWER
926
EDDIE SAYS
Increase 8 hundred by 1 hundred to get 9 hundred...
826 becomes 926
  • Question 5

What number is 1 more than 504?

CORRECT ANSWER
505
EDDIE SAYS
Increase 4 units by 1 unit to get 5 units...
504 becomes 505
  • Question 6

What number is 100 more than 526?

CORRECT ANSWER
626
EDDIE SAYS
Increase 5 hundred by 1 hundred to get 6 hundred...
526 becomes 626
  • Question 7

What number is 1 more than 499?

CORRECT ANSWER
500
EDDIE SAYS
Increase 9 units by 1 unit to get 10 units...and remember to carry
499 becomes 500
  • Question 8

What number is 10 more than 499?

CORRECT ANSWER
509
EDDIE SAYS
Increase 49 tens by 1 ten to get 50 tens...
499 becomes 509
  • Question 9

What number is 100 less than 499?

CORRECT ANSWER
399
EDDIE SAYS
Reduce 4 hundred by 1 hundred to get 3 hundred...
499 becomes 399
  • Question 10

What number is 10 less than 482?

CORRECT ANSWER
472
EDDIE SAYS
Reduce 8 tens by 1 ten to get 7 tens...
482 becomes 472
---- OR ----

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