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Know Your Numbers: Identify One Less

In this worksheet, students will identify one number less than the given number (from a range between 0 and 100).

'Know Your Numbers: Identify One Less' worksheet

Key stage:  KS 1

Year:  Year 1 Maths worksheets

Curriculum topic:   Number: Number and Place Value

Curriculum subtopic:   Identify One More/One Less

Difficulty level:  

Worksheet Overview

This activity is about finding 1 less than a given number.


boy counting


We do this by taking 1 away from the given number.

When we take 1 away, we go to the whole number just before the number we started with.


Example 1

Write the number that is:


1 less than 33



33 - 1 = 32


When we count we go.... 30, 31, 32, 33.

32 is the number just before 33.


So, the answer is 32


Example 2


Write the number that is:


1 less than 50



50 - 1 = 49


Don't be put off because your new number has a different number of tens - it is still the number that comes before 50.


When we count we go ........47, 48, 49, 50

49 is the number just before 50.


So, the answer is 49


Now it's time to have a go at some questions. How do you feel about that?


happy girl

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