1 / 38

Addition & Subtraction

YEAR 2. Addition & Subtraction. Fact families Check calculations Compare number sentences Related facts. Block 2 – Week 4. Lesson 1. Step: Fact families. Fluency. Use the picture to create the associated fact family. 5. 6. 11. ______ + ______ = ______ ______ + ______ = ______

tonya
Download Presentation

Addition & Subtraction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. YEAR 2 Addition & Subtraction Fact families Check calculations Compare number sentences Related facts Block 2 – Week 4

  2. Lesson 1 Step: Fact families

  3. Fluency Use the picture to create the associated fact family. 5 6 11 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ 6 5 11 11 5 6 11 6 5

  4. Fluency Use the picture to create the associated fact family. 7 8 15 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ 8 7 15 15 7 8 15 8 7

  5. Fluency Use the picture to create the associated fact family. 9 7 16 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ 7 9 16 16 9 7 16 7 9

  6. Fluency Use the part-whole diagram to create the associated fact family. 6 11 17 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ 17 11 6 17 6 11 17 6 11 6 17 11

  7. Fluency Use the part-whole diagram to create the associated fact family. 9 4 13 13 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ 4 9 13 9 4 13 9 4 13 4 9

  8. Fluency Use the bar model to create the associated fact family. 11 5 16 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ 16 5 11 16 16 11 5 16 5 11

  9. Fluency Use the bar model to create the associated fact family. 13 7 20 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ 20 7 13 20 20 13 7 20 7 13

  10. Reasoning Spot and correct the mistakes in the fact family below. 14 + 2 = 16 2 + 14 = 16 14 – 16 = 2 2 – 16 = 14 The subtraction calculations should be:16 – 14 = 2 16 – 2 = 14

  11. Problem solving Draw part-whole diagrams to show the different ways it could be completed. Can you create a fact family for each part-whole diagram? 16 ______ + ______ = ______ ______ + ______ = ______ ______ – ______ = ______ ______ – ______ = ______ ? ?

  12. Lesson 2 Step: Check calculations (Practical)

  13. Fluency Use counters to check whether the following calculations are true or false. False 13 – 5 = 9 _________________ 15 – 8 = 7 _________________ True 12 – 5 = 8 _________________ False

  14. Fluency Use counters to check whether the following calculations are true or false. True 13 + 5 = 18 _________________ 8 + 9 = 17 _________________ True False 12 + 5 = 19 _________________

  15. Fluency Use counters to check whether the following calculations are true or false. True 17 – 6 = 11 _________________ 13 – 6 = 7 _________________ True False 16 – 9 = 6 _________________

  16. Fluency Sort the calculations into the table below. 19 – 4 = 15 18 – 4 = 14 11 – 4 = 8 20 – 7 = 12 9 + 10 = 19 13 + 5 = 18 9 + 7 = 17 12 + 7 = 20 19 – 4 = 15 20 – 7 = 12 18 – 4 = 14 11 – 4 = 8 12 + 7 = 20 9 + 10 = 19 13 + 5 = 18 9 + 7 = 17

  17. Fluency 19 – 5 = 14 Which calculations could be used to check the calculation above? 14 + 5 14 – 5 5 + 14 14 – 19

  18. Fluency 7 + 6 = 13 Which calculations could be used to check the calculation above? 13 + 6 13 – 6 6 + 7 7 – 13

  19. Reasoning 13 + 4 = 17 cannot be used to check 13 – 4. True or false?Explain why. True. 13 – 4 = 9.This is not a related fact for 13 + 4 = 17. Which related facts should be used to check 13 + 4 = 17? 4 + 13 = 17 17 – 4 = 13 17 – 13 = 4

  20. Problem solving Which two inverse calculations could be used to check the calculation below? 17 – 9 = 8 8 + 9 = 17 9 + 8 = 17

  21. Lesson 3 Step: Compare number sentences

  22. Fluency Use the number tracks to help you compare the calculations. Compare using greater than, less than or equal to. 8 + 5 _________________ 6 + 7 equal to

  23. Fluency Use the number tracks to help you compare the calculations. Compare using < , > or =. > 7 + 3 ________ 5 + 3

  24. Fluency Compare the number sentences using >, < or =. > 10 + 2 __________ 8 + 3 < 12 + 5 __________ 14 + 5 > 16 + 1 __________ 7 + 7

  25. Fluency Compare the number sentences using >, < or =. = 18 – 5 __________ 20 – 7 < 11 – 4 __________ 15 – 7 > 12 – 6 __________ 14 – 9

  26. Fluency Compare the number sentences using >, < or =. > 18 – 3 __________ 7 + 7 < 8 + 9 __________ 20 – 2 = 17 – 5 __________ 10 + 2

  27. Fluency Complete the missing numbers. 6 14 – 5 = 3 + _______ 6 18 – 5 = 19 – _______ 8 11 + 6 = 9 + _______

  28. Reasoning There are 4 even numbers that could go in the box. 11 – < 12 – 5 Is Gina correct? No, there are 3 even numbers: 6, 8 and 10.

  29. Problem solving 6 + 9 < 11 + The missing number is less than 10. What could the missing number be? List all possibilities. 5, 6, 7, 8 or 9.

  30. Lesson 4 Step: Related facts

  31. Fluency Complete the part-whole diagrams to show related facts. 90 9 6 30 3 60

  32. Fluency Complete the part-whole diagrams to show related facts. 100 10 7 30 3 70

  33. Fluency Complete the part-whole diagrams to show related facts. 70 7 3 40 4 30

  34. Fluency 80 If I know 6 + 2 = 8, then I know 60 + 20 = _____ 90 If I know 4 + 5 = 9, then I know 40 + 50 = _____ 100 If I know 4 + 6 = 10, then I know 40 + 60 = _____

  35. Fluency 50 80 If I know 3 + 5 = 8, then I know 30 + _____ = _____ 40 60 If I know 4 + 2 = 6, then I know _____ + 20 = _____ 90 70 If I know 2 + 7 = 9, then I know 20 + _____ = _____

  36. Reasoning Reasoning Kat has 6 marbles. She gives 4 away.Che has 60 marbles. He gives ______ away.Che has 20 marbles left. True False Kat has 20 marbles left. Che gave 4 marbles away. Kat has 2 marbles left. Che gave 40 marbles away.    

  37. Problem solving Continue the patterns. What is similar? What is different? 60 = 100 – 40 50 = 100 – 50 _______________ _______________ _______________ _______________ _______________ 6 = 10 – 4 5 = 10 – 5 _______________ _______________ _______________ _______________ _______________ 40 = 100 – 60 4 = 10 – 6 30 = 100 – 70 3 = 10 – 7 20 = 100 – 80 2 = 10 – 8 10 = 100 – 90 1 = 10 – 9 0 = 100 – 100 0 = 10 – 10

  38. Lesson 5 Step: Consolidation

More Related