Math > Year 2

Adding and subtracting 2 two-digit numbers

What are two-digit numbers?
Two-digit numbers are the numbers made up of tens and ones.

Example:



 

Adding two two-digit numbers
We can split the numbers into tens and ones to add two two-digit numbers.

Example: 35   + 42



 

Subtracting two two-digit numbers
To subtract two two-digit numbers, we can split the numbers into tens and ones.

 

Example: 78 – 25




78 – 25 = 53

Let's try a question.

Question: Who has more money? 

Sophia has £36 and her mother gave her £21 more. 

Poppy has £24 and her mother gave £32 more.
 

Sophia:
 


30 + 20 = 50

6 + 1 = 7

50 +7 = 57


Poppy:
 


20 + 30 = 50

4 + 2 = 6

50 + 6 = 56


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