1. Subtraction
Week 12

2. Lesson 1
LO: to count forwards to 20 and backwards to 0.
Starter:
Get ready to blast off!!!! Look at the board to help you!
0,1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 BLAST OFF.
And let’s go back to earth. 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0.

3. LO: to subtract using a number line.

4. take-away
less
fewer
Subtraction
minus
difference

5. You can subtract using a number line.
We do this by counting back!

6. 10 – 2 =

7. 10 – 6 =

8. 10 – 3 =

9. 10 – 1 =

10. 10 – 8 =

11. Use your number line to help.
After you have finished the monkey subtraction, make up your own take away questions and show me how you do it in your copybook.
Use your number line to help.

12. LO: to use a number line to subtract two numbers.
Use your number lines to help!

13. Plenary
Count in 10s forwards and backwards.

14. Lesson 2
LO: to subtract a single digit number from a 2 digit number.

15. Starter
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16. Watch your teacher carefully.
We are going to subtract big numbers. Use your number lines to help!
17 – 5=
19 - 7=
14 – 8=

17. Bananas subtraction
Don’t forget to use your number lines to help you! 

18. Plenary
Count in 10s forwards and backwards.

19. Lesson 3
LO: to subtract 10 from a number using a 100 square.

20. Starter Number problems. Use your number lines to help!
Sarah had 19 sweets. Miss Annie ate 5 of them. How many did Sarah have left?
Chloe had 15 cats. She gave 7 to Miss Treasa. How many cats did Chloe have left?
Omar had 10 cakes. He gave 5 to Miss Eilis. How many did he have left?
Mohammad had 7 ice-creams. He gave 4 to Miss Joanne. How many did he have left?

21. LO: to subtract 10 from a number using a 100 square.
Key Question: What patterns do you notice when we add or subtract ten from a number?

23. LO: to subtract 10 from a number using a 100 square.
Use your number square to write some number sentences, subtracting 10s.

24. Plenary
Count in 10s forwards and backwards.

25. Lesson 4
LO: to add 10 to a number.

26. Starter LO: to find ten more and ten less.
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27. LO: to add 10 to a number. Game: I have, who has?
Look at the 100 square to help!!!

28. Lesson 4 LO: to add 10 to a number using a 100 square
Lesson 4 LO: to add 10 to a number using a 100 square. One more or one less worksheet 

29. Plenary
Count in 10s forwards and backwards.

30. Lesson 5
LO: to subtract two numbers and record

31. Starter LO: to find ten more and ten less.
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32. LO: to subtract two numbers.
Number splat!! Listen to your teacher as she calls out a number sentence. Use your number lines to help you to find the answer. When you know, put your hand on your head. Now, splat the number!

33. Lesson 5: to subtract two numbers and record the answer.
Subtraction bingo. Take out your whiteboards. Split your board into 6 squares like you can see here. Next, write a number in each box. The number should be between Listen to your teacher as she calls out a subtraction problem. If you have the answer, you may cross it out on your board.

34. Your task
Colour by numbers. Be careful! Subtract the numbers first. Use your number line and 100 square to help you. Then colour in using the correct colour. When you have finished, design your own colour by numbers picture!

35. Lesson 6
10 Less