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 when there will be a remainder. • I can write a division sentence and record the remainder.
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?
Leftovers ? ? When dividing in maths, the groups have to be the same size. What do you think ‘leftover’ means ? when dividing? Sometimes there may be a leftover.
What a Handful! Working in pairs, grab a handful of counters between you. Make equal-sized groups with the counters. How What is many do the biggest Do you you have leftover have any left over? you could left over? have? ? ? 10 5 2 8 Can you make groups of ? ?
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 have 11 counters. If I make groups of 2, I I make groups of 5, I won’t have a leftover will have 1 leftover because 14 is a because 2 groups of multiple of 2. 5 make 10.
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
Remainders 13 2 There are 6 groups of 2. There is one left over. 13 2 = 6 remainder 1 13 2 = 6 r1
Remainders 25 5 There are 5 groups of 5 exactly. 25 5 = 5
Remainders 38 5 = 7 r3 38 5 There are 7 groups of 5. There are 3 left over. +5 +3 +5 +5 +5 +5 +5 +5 0 5 10 15 20 25 30 35 40
Remainders 40 10 There are 4 groups of 10 exactly. 40 10 = 4
Remainders ? ? Did you spot the remainders? ? Could you explain how you knew?
Leftovers Activity
Write It! ? ? Can you write a division sentence for what ? you see, including the remainder? 19 5 = 3 r4
Write It! ? ? Can you write a division sentence for what ? you see, including the remainder? +2 +2 +2 +2 +2 +2 +2 +2 +1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 17 2 = 8 r1
Write It! ? ? Can you write a division sentence for what ? you see, including the remainder? 5 2 = 2 r1
Write It! ? ? When will you never have a remainder? ? Explain your answer. When dividing by 1 because you can always make equal groups of 1. ? ? ? What would be the largest remainder you could have when dividing by 10? Explain your answer. 9. If the remainder was any bigger, you would have another group of 10.
Aim • I can find a leftover when dividing. Success Criteria • 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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