1. Parents Mathematics Workshop Strategies for Addition & Subtraction

2. Aims of session To consider how maths is taught today. To consider the progression of addition and subtraction methods during primary school.

3. Key differences today Interactive teaching Emphasis on mental calculation Different approach to written calculation Maths through problem solving Maths is fun!

4. The aim The aim is for children to do mathematics in their heads, and if the numbers are too large, to use pencil and paper to avoid losing track. To do this children need to learn quick and efficient methods, including appropriate written and mental methods.

5. 76 + 47 = 76 Number line 116 76 + 40 123 + 7 86 +10 96 +10 106 +10 116 +10 123 +7

6. 358 + 473 = Expanded column addition 358 + 473 11 120 700 831 358 + 473 831 11

7. Column addition 2 3 4 + 3 5 7 1 19 5

8. Column addition with numbers with up to two decimal places 8 3 ∙4 + 4 6 ∙ 7 4 1 4 1 0 1 3 ∙ 0 1

9. Children are taught to understand subtraction as taking away (counting back) and finding the difference (counting up).

10. Number line – count back Imran has 13 conkers; he gives 4 away to his friends. How many does he have left? 13 – 4 = 131211 910 9 conkers - 1

11. Number line – count on Imran has 43 conkers; he gives 24 away to his friends. How many does he have left? 43 - 24 = 24 30 +6 43 +3 40 +10 19p more

12. 8.23 – 4.55 = 3.68 8.23 8.00 5.00 4.55 +0.23 +3+0.45

13. Expanded Column Subtraction 74 – 23 = ? 70 4 - 20 3 50 1 = 51 663 – 378 = ? 600 60 3 - 300 70 8 1350500 150 580200= 285

14. Column subtraction 5 8 4 - 3 9 7 7 7 1 41 8 1

15. Any questions?