16 11 20 LI To find fact families

16. 11. 20 LI: To find fact families.

Vocabulary • Add • Plus • Subtract • Minus

Fluency 3 + 2 = 5 5 = 3 + 2 2 + 3 = 5 5 = 2 + 3 - 3 = 2 5 - 2 = 3 3 = 5 5 - 2 2 = 5 - 3

Fluency 5 + 4 = 9 9 = 5 + 4 4 + 5 = 9 9 = 4 + 5 - 5 = 4 9 - 4 = 5 5 = 9 9 - 4 4 = 9 - 5

Fluency Write a fact family for the part-whole model. 5 + 3 = 8 8 = 5 + 3 3 + 5 = 8 8 = 3 + 5 - 5 = 3 8 - 3 = 5 5 = 8 8 - 3 3 = 8 - 5 5 8 3

Fluency Write a fact family for the part-whole model. 6 + 4 = 10 10 = 6 + 4 4 + 6 = 10 10 = 4 + 6 - 6 = 4 10 - 4 = 6 6 = 10 10 - 4 4 = 10 - 6 6 10 4

Challenge – Reasoning 8 © White Rose Maths 2019

17. 11. 20 LI: To find fact families.

Vocabulary • Add • Plus • Subtract • Minus

Fluency Use the part-whole model to create a fact family of 8. 7 2 5 2 + _____5= _____ 7 7 = _____2+ _____ 5 5 + _____2= _____ 7 7 = _____5+ _____ 2 7 – _____2= _____ 5 5 = _____7– _____ 2 7 – _____5= _____ 2 2 = _____7– _____ 5

Fluency Use the part-whole model to create a fact family of 8. 9 6 3 6 + _____3= _____ 9 9 = _____6+ _____ 3 3 + _____6= _____ 9 9 = _____3+ _____ 6 9 – _____6= _____ 3 3 = _____9– _____ 6 9 – _____3= _____ 6 6 = _____9– _____ 3

Fluency Use the part-whole model to create a fact family of 8. 6 4 2 4 + _____2= _____ 6 6 = _____4+ _____ 2 2 + _____4= _____ 6 6 = _____2+ _____ 4 6 – _____4= _____ 2 2 = _____6– _____ 4 6 – _____2= _____ 4 4 = _____6– _____ 2

Practical: Select a number card and create a fact family of 8.

Challenge – Problem Solving Amir has 5 counters in total. Each of his counters are either in a bag or a cup. How many different ways could the counters be split between the bag and the cup? Write 8 number sentences to go with each. Are any of the sets of number sentences the same? Why? 18 © White Rose Maths 2019

18. 11. 20 LI: To count back.

Vocabulary • 10 – 1 • Counting • Down • Backwards

Fluency Which operation do we use to count back? How can a number track help us? 1 2 3 4 5 6 7 8 9 10

Fluency Use the number track to help calculate: 5– 3 1 2 3 4 5 6 5– 3=2 7 8 9 10

Fluency Use the number track to help calculate: 7– 4 1 2 3 4 5 6 7– 4=3 7 8 9 10

Fluency Use the number track to help calculate: 9– 2 1 2 3 4 5 6 9– 2=7 7 8 9 10

Fluency Use the number track to help calculate: 8– 4 1 2 3 4 5 6 8– 4=4 7 8 9 10

Fluency Use the number track to help calculate: 10 – 3 1 2 3 4 5 6 10 – 3 = 7 7 8 9 10

Practical: Use a number track to help you count back. Fluency

Challenge – Reasoning 29 © White Rose Maths 2019

19. 11. 20 LI: To count back.

Vocabulary • 10 – 1 • Counting • Down • Backwards

Fluency Complete the number sentence. – 1 0 1 2 3 4 5 6 5– 1= 4 7 8 9 10

Fluency Complete the number sentence. – 1 0 1 2 – 1 3 – 1 4 – 1 5 6 6– 4= 2 7 8 9 10

Fluency Complete the number sentence. – 1 0 1 2 3 4 – 1 5 6 7– 2= 5 7 8 9 10

Fluency Complete the number sentence. – 1 0 1 2 3 4 – 1 5 6 8– 3= 5 – 1 7 8 9 10

Fluency Complete the number sentence. – 1 0 1 2 3 4 5 9 – 3= 6 6 – 1 7 – 1 8 9 10

Reasoning Ben is representing 6 – 3 on the number line below. What mistake has Ben made in the number line? – 1 0 1 2 3 4 – 1 5 6 7 8 9 Ben has only counted two jumps. He needs to count 3 jumps from 6 to get the answer 3. 10

Problem solving I count back from 7. How many steps does it take to get to two? – 1 0 1 2 – 1 3 – 1 4 – 1 5 Show this in a number sentence. 7– 5=2 – 1 6 7 8 9 10

Challenge – Problem Solving The answer is 2 How many ways can you get to this by counting backwards on this number line? 40 © White Rose Maths 2019

20. 11. 20 LI: To find the difference.

Vocabulary • 1 – 10 • Difference • What is the difference between the numbers?

Fluency Find the difference between the colour cubes. The difference between _____4 and _____ is 3_____. 4 – 3 = 1 1

Fluency Find the difference between the colour cubes. The difference between _____5 and _____ is 2_____. 5 – 2 = 3 3

Fluency Find the difference between the colour cubes. The difference between _____6 and _____ is 4_____. 6 – 4 = 2 2

Fluency Find the difference between the colour cubes. The difference between _____3 and _____ is 2_____. 3 – 2 = 1 1

Fluency Match the colour cubes to their difference. 2 3 4

Which number sentence represents the difference between the pink cubes and yellow cubes? a) 9 – 3 = 6 b) 6 – 3 = 3 c) 3 – 9 = 6 How do you know? There are 6 pink cubes and 3 yellow cubes. The difference is 3. Reasoning

How many number sentences can you make to show the difference between the coloured counters? ? – ? = ? For example: Red and yellow (4 – 3 = 1). Yellow and blue (4 – 2 = 2). Blue and green (2 – 1 = 1). Green and red (3 – 1 = 2). Red and blue (3 – 2 = 1). Yellow and green (4 – 1 = 3). Problem solving

Challenge – Reasoning Two numbers have a difference of 4 The larger number is less than 10 What could the two numbers be? 51 © White Rose Maths 2019

Challenge – Problem Solving Annie says, The difference in number of spots on the lady birds is 7 Write a number sentence to show why Annie is correct. 52 © White Rose Maths 2019