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Lesson Four

Good morning everyone. Another scorcher expected today.

 

Today's focus is adding 2-digit numbers together by counting on in tens and ones.  Remember our lesson on Monday and how we identified the tens and ones within a number.  We used Lego bricks or different shaped pasta or just drew the tens and ones.  Always remember to have the largest number first in our number sentences.

 

  • Task one is recap making a number with the resources as we did on Monday.  Practise this by picking two cards and creating the number.   Remember, even is you are feeling confident with number, to explain to someone exactly what's within the number.  How many tens there are, how many ones and what the value of each digit is?See picture Task One below.

 

  • Task Two: Pick four number cards to create two 2-digit numbers.  Then you are going to draw or use the lego/pasta to create the numbers. See picture Task Two below.  Then add the tens together and then the ones together.  Next step is to add the totals together. 

         e.g.              43 + 25 =

                  Tens   40 + 20 =  60

                  Ones    3 + 5 =      8

                  Totals   60 + 8 =   68                  So the answer to 43 + 25 = 68

 

The children have been shown different ways of achieving this and I will put pictures below to show you.   Some of you will need to use the physical resources and some of you won't and that's ok.  We always show different ways of achieving an answer as everyone's brain works differently and you will find by trying each method which is the one you feel confident using.   We always ask the children to show or explain in words their workings out as this checks their understanding.  It can be difficult to put into words exactly how they did it and this is  a skill we are trying to instill in them.  "I just did it" doesn't fully explain their understanding.

 

  •  Task Three Challenge:  Try adding different units of measurement to your additions.  Can you add in pennies and pounds or mm, cm and m?  Remember if you are doing this that there are 100 pennies to a pound.  10 mm to 1cm, 100 cm to 1 m.  

 

 

Note to parents: Please note that we do not teach the children column addition in year 2, this will be taught in year 3

 

 

Examples

Task One
Task One
Task 2: showing how numbers are made with resource
Task 2: How to partition the Tens and ones
Task 2: Another way to partition the Tens and Ones
Work book examples
Work book examples

You could use our mild, hot chilli challenge sheet.

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