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St Paul's C of E Primary School

Heathside Grove

LEARNING to make a difference

8th January 2021

 

Starter:

 

Using your number square, find 10 more and 10 less than these numbers:

 

 54    21     57     84     61     24    35    67    38 

 

 

LO: To add a 2-digit number and a 1-digit number.

 

Today we are going to continue adding numbers using chips and peas.

Remember, we use chips to represent tens and peas to represent ones.

 

 

 

Today we will be crossing ten, so we will need to exchange 10 ones for 1 ten.

 

In this example we can take 4 peas and add to the 6 peas to make 1 more 10.

We then exchange 10 peas for 1 chip, so we now have 3 tens and 3 ones. The answer is 33

 

 

 

 

Task:

Use the squared paper in your packs to record your answers.

 

21 + 9 =                     56 + 7 =

45 + 8 =                     32 + 9 =

39 + 8 =                     25 + 8 =

47 + 7 =                      34 + 8 =

 

 

Challenge

 

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