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Maths | Year 2 | Multiplication and Division | Solve Multiplication and Division Problems | Lesson 1 of 2: Leftovers
Maths Multiplication and Division Maths | Year 2 | Multiplication - - PowerPoint PPT Presentation
Maths Multiplication and Division Maths | Year 2 | Multiplication - - PowerPoint PPT Presentation
Maths Multiplication and Division Maths | Year 2 | Multiplication and Division | Solve Multiplication and Division Problems | Lesson 1 of 2: Leftovers Aim I can find a leftover when dividing. Success Criteria I can make a prediction about
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Success Criteria Aim
- I can find a leftover when dividing.
- I can make a prediction about when there will be a remainder.
- I can write a division sentence and record the remainder.
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Leftovers
What do you think the word ‘leftover’ means?
? ? ?
Is it the remains of a meal? Is it that bit of spare paint from when you had your room painted?
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Leftovers
What do you think ‘leftover’ means when dividing?
? ? ?
When dividing in maths, the groups have to be the same size. Sometimes there may be a leftover.
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What a Handful!
Working in pairs, grab a handful of counters between you. Can you make groups of ?
? ? ?
Make equal-sized groups with the counters.
10
How many do you have left over? What is the biggest leftover you could have? Do you have any left over?
5 2 8
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What a Handful!
Now try grabbing another handful.
This time, count how many counters you have and try to make a prediction about when you will have leftover counters and when you won’t.
I have 14 counters. If I make groups of 2, I won’t have a leftover because 14 is a multiple of 2. I have 11 counters. If I make groups of 5, I will have 1 leftover because 2 groups of 5 make 10.
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Remainders
In maths, we call a leftover a remainder. Which of these will have a remainder? Give a reason for your answer.
? ? ? 13 2 25 5 38 5 40 10
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Remainders
There are 6 groups of 2.
13 2
There is one left over.
13 2 = 6 remainder 1 13 2 = 6 r1
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Remainders
There are 5 groups of 5 exactly.
25 5 25 5 = 5
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Remainders
There are 7 groups of 5.
38 5
There are 3 left over.
38 5 = 7 r3
5 10 15 20 25 30 35 40 +5 +5 +5 +5 +5 +5 +5 +3
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Remainders
There are 4 groups of 10 exactly.
40 10 40 10 = 4
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Remainders
Did you spot the remainders? Could you explain how you knew?
? ? ?
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Leftovers Activity
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Write It!
Can you write a division sentence for what you see, including the remainder?
? ? ? 19 5 = 3 r4
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Write It!
Can you write a division sentence for what you see, including the remainder?
? ? ? 17 2 = 8 r1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 +2 +2 +2 +2 +2 +2 +2 +2 +1
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Write It!
Can you write a division sentence for what you see, including the remainder?
? ? ? 5 2 = 2 r1
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Write It!
When will you never have a remainder? Explain your answer.
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What would be the largest remainder you could have when dividing by 10? Explain your answer.
? ? ?
When dividing by 1 because you can always make equal groups of 1.
- 9. If the remainder was any bigger, you would have
another group of 10.
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Success Criteria Aim
- I can find a leftover when dividing.
- I can make a prediction about when there will be a remainder.
- I can write a division sentence and record the remainder.
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