1. Parents & pupils have asked for support with adding & subtracting fractions. Here are some of the slides used in our maths lessons. I hope you find them useful. The slides are colour-coded to help you… Addition Subtraction Real-life example

2. 1212 + 5656 = Lowest common denominator (LCD) = 2, 4, 6, 8, 6, 12, 18, 24 LCD is 6 + = 8686 2626 1 or 1313 1

3. 4545 + 7979 = Lowest common denominator (LCD) = 5, 10.15, 20, 25, 30, 35, 40, 45, 50 9, 18, 27, 36, 45, 54 + = 36 + 35 45 26 45 1 or = 71 45

4. Use your w/bs to calculate this… 3636 14 18 1313 + + = 6, 12, 18 18, 36, 54 3, 6, 9, 12, 15, 18 + + = 29 18 11 18 1 Lowest common denominator LCD =

5. Add and subtract mixed numbers with related denominators 3½ + 2¼ LCD is 4 Add the 3 and 2. Add the fractions. Then put the two answers together. Answer 5¾ + =

6. Add and subtract mixed numbers with related denominators LCD is 4 Add the 2 and 1. Add the fractions. Then put the two answers together. Answer 4¼ + 2¾ + 1½. =

7. Add and subtract mixed numbers with related denominators LCD is 6 Add the 2 and 1. Add the fractions. Then put the two answers together. 2 2 / 3 + 1 5 / 6 + = Answer 4½

8. 1212 & 5656 Lowest common denominator (LCD) = 2, 4, 6, 8, 6, 12, 18, 24 LCD is 6 & I want to subtract the smaller fraction from the larger fraction 1313 or - 1212 5656 - = = 2626

9. 7878 1414 LCD is 8 Subtract the 2 from the 3. Subtract the fractions. Then put the two answers together. 2 3 - - = Answer 1 5858

10. 4½ – 2¾ How this might be solved? Can we take ¾ from ½ straight away? What if we converted both fractions to improper fractions with the same denominator… Once we have done the subtraction we can convert back to mixed number. 9292 18 4 11 4 –or 18 - 11 4 7474 = 7474 3434 1

11. Leighan has £30 She spends 1/3 on books and 1/6 on pens. What fraction does she have left? How much money is this?

12. Leighan has £30 She spends 1/3 on books and 1/6 on pens. What fraction does she have left? How much money is this? 1/3 is equivalent to 2/6 2 + 1 = 3 6 6

13. Leighan has £30 She spends 1/3 on books and 1/6 on pens. What fraction does she have left? How much money is this? 1/3 is equivalent to 2/6 2 + 1 = 3 6 6 The remaining fraction is 3 which is equivalent to 1 6 2

14. Leighan has £30 She spends 1/3 on books and 1/6 on pens. What fraction does she have left? How much money is this? 1/3 is equivalent to 2/6 2 + 1 = 3 6 6 The remaining fraction is 3 which is equivalent to 1 6 2 1/2of £30 £30 ÷ 2 = £15

15. Sam has £40. He spends 1/4 of his money on comics and 3/8 of his money on books. What fraction does he have left? How much money is this? ¼ is equivalent to 2/8 2 + 3 = 5 8 8 The remaining fraction is 3 8 3/8 of £40 £40 ÷ 8 = £5 (this is 1/8) £5 x 3 = £15 (this is 3/8)