Worksheet: One More and One Less: Numbers up to 100

In this worksheet, we will practice finding one more or one less than any number up to 100 and investigating how the number of tens and the number of ones change.

Q1:

What is the number after 29?

Q2:

What is 1 more than this number?

Q3:

What is 1 less than 77?

Q4:

Which of the following represents one more than 23?

  • A
  • B
  • C

Q5:

What is 1 less than 20?

Q6:

What is 1 more than 15?

Q7:

Hannah and Mia work out one more than 75.

Who is correct?

  • AHannah
  • BMia

Q8:

Find the number that is one less than the total number of tennis balls.

Q9:

Which of the following represents the number that is one less than 54?

  • A
  • B
  • C

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