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Maths

This week we are learning about place value.

 

Think about:

 

Place Value- tens and ones

Partitioning numbers into hundreds, tens and ones

Using partitioning to add two 2 digit numbers numbers

Adding numbers using apparatus and place value

Tens and ones

2-digit numbers are made up of tens and ones. The amount of tens is the first number and the amount of ones is the second number.

Download the sheet and partition the 2-digit numbers to show how many tens and ones make up the numbers. You will see the first one has been done for you to help you get started.

When you have finished, can you write some of your own? Why not try both sheets!

 

Partitioning 2 and 3-digit numbers

Yesterday we looked at how 2-digit numbers are made up of tens and ones. Today we will look at partitioning 2-digit numbers into tens and ones and 3-digit numbers into hundreds, tens and ones. We will also write them as addition calculations.

Talk about how to partition the numbers and how they would look in an addition calculation. The first two on the sheet have been done as examples and these will show you how to write all the numbers and calculations.

The second sheet has some 3-digit numbers too, so you will need to show the hundreds as well as the tens and ones! 

Adding and Place Value

Discuss addition and explain that today’s calculations will have two 2 digit numbers to add together.  Clarify use of language (tens and ones)

What happens when we add?  Practise counting on using number lines or 100 squares.  What else can you use to support your working out?

 

Watch video

https://www.bbc.co.uk/bitesize/articles/z69fy9q

 

 

  • Draw out the numbers in the calculations using Dienes (draw sticks and crosses for the tens and ones- see video on Miss Sugden's class page)
  • Count the ones and write the number
  • Count the tens and write this down
  • Add the tens and the ones together

 

Now practise adding a random selection of numbers together that you feel comfortable with e.g.

 24+ 12=

19 + 11 =

6 + 13 =

Dienes are useful apparatus that we use in school to help us teach Maths.

Take a look at the presentation below to see how they work and understand how they can help visually and practically. We understand that you will not have Dienes at home, but maybe you could use lollypop sticks and buttons to represent the 'tens' and 'ones'.

 

Print off the Dienes cards and use them to help you with adding larger numbers.

  • Add the 'ones' first and write the total
  • If you have more than ten 'ones', don't forget to exchange for a stick of 'ten'
  • Add the 'tens' next and write the total
  • Now find the grand total by combining the 'tens' and 'ones' together.

Refer to the video on Miss Sugden's class page entitled addition to see how this works if you are unsure.

 

 

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