Fractions – Adding – Complete Lesson

1. Fractions – Adding – Complete Lesson Preview the presentation to check ability-level, AFL questions, and the animations during demonstrations. It is recommended to delete slides/sections not needed for your class.

3. Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts - Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

4. TRONCIFA FRACTION LUASEQ EQUALS DDA ADD EMRANURTO NUMERATOR ACBTRSUT SUBTRACT RNATOENODMI DENOMINATOR

7. Complete the fraction pyramids. Every block is the sum of the two blocks below it. A) B) C) D)

8. Answers Complete the fraction pyramids. Every block is the sum of the two blocks below it. A) B) C) D)

9. 01 March 2019 Adding Fractions

10. KNOWLEDGE CHECK

11. KNOWLEDGE CHECK

12. Josh ate of a cheese pizza andof a pepperoni pizza. How much of a whole pizza did he eat in total?

13. Sally ate of a cheese pizza andof a chicken pizza. How much of a whole pizza did she eat in total?

14. Jane ate of a mushroom pizza andof a chicken pizza. How much of a whole pizza did she eat in total?

15. To add fractions, they must have the same denominator (they must be split into the same size pieces) If all the denominators are the same, the calculation is easy!

16. To add fractions, they must have the same denominator (they must be split into the same size pieces) If all the denominators are the same, the calculation is easy!

17. To add fractions, they must have the same denominator (they must be split into the same size pieces) If all the denominators are the same, the calculation is easy!

20. Adding Fractions Complete the equivalent fractions for each calculation. Example: 4) Shade of the shape. Shade of the shape. Write the total as a fraction = = 5) 1) = = 6) 2) = = 7) 3) = =

21. Adding Fractions Complete the equivalent fractions for each calculation. Example: 4) Shade of the shape. Shade of the shape. Write the total as a fraction = = 5) What rule can we write for adding fractions without drawing boxes? 1) = = 6) 2) = = 7) 3) = =

22. Adding Fractions Answers Complete the equivalent fractions for each calculation. Example: 4) Shade of the shape. Shade of the shape. Write the total as a fraction = = 5) 1) = = 6) 2) = = 7) 3) = =

23. We need the denominators to be the same. Which fraction should we change to make the calculation easy? Double the denominator Double the numerator

24. We need the denominators to be the same. Which fraction should we change to make the calculation easy? Double the denominator Double the numerator

25. We need the denominators to be the same. Which fraction should we change to make the calculation easy? Double the denominator Double the numerator

26. We need the denominators to be the same. Which fraction should we change to make the calculation easy? Triple the denominator Triple the numerator

27. We need the denominators to be the same. Which fraction should we change to make the calculation easy? Triple the denominator Triple the numerator

28. We need the denominators to be the same. Which fraction should we change to make the calculation easy? Denominator × 4 Numerator × 4

29. Example Complete these calculations in your book. 1) Choose which fraction you need to change 2) Make an equivalent fraction 3) Add the fractions! (Remember to simplify your answer!)

30. Example Complete these calculations in your book. 1) Choose which fraction you need to change 2) Make an equivalent fraction 3) Add the fractions! Answers (Remember to simplify your answer!)

31. Example Complete these calculations in your book. 1) Choose which fraction, or fractions, you need to change 2) Make equivalent fractions 3) Add the fractions! (Remember to simplify your answer!)

32. Example Complete these calculations in your book. 1) Choose which fraction, or fractions, you need to change 2) Make equivalent fractions 3) Add the fractions! Answers (Remember to simplify your answer!)

33. Jo ate of a ham pizza andof a chicken pizza. How much of a whole pizza did she eat in total? How can we compare these fractions? Can we add them?

34. We can’t add these fraction because we can’t multiply 2 by anything to get 3. Is Hannah right?

35. What common denominator could we use? To add fractions they must have a common denominator. We will need to change both fractions. Numerator & Denominator × 3 Numerator & Denominator × 2

36. What common denominator could we use? To add fractions they must have a common denominator. We will need to change both fractions. Numerator & Denominator × 4 Numerator & Denominator × 3

37. What common denominator could we use? Numerator & Denominator × 3 Numerator & Denominator × 5

38. What common denominator could we use? Numerator & Denominator × 4 Numerator & Denominator × 5

39. What common denominator could we use? Numerator & Denominator × 5 Numerator & Denominator × 6

40. What common denominator could we use? Numerator & Denominator × 2 Numerator & Denominator × 3

41. Whiteboards

42. EXAMPLE What common denominator could we use? Numerator & Denominator × 2 Numerator & Denominator × 3

43. EXAMPLE What common denominator could we use? Numerator & Denominator × 3 Numerator & Denominator × 4

44. EXAMPLE What common denominator could we use? Numerator & Denominator × 5 Numerator & Denominator × 4

45. EXAMPLE What common denominator could we use? Numerator & Denominator × 2 Numerator & Denominator × 3

46. EXAMPLE What common denominator could we use? Numerator & Denominator × 7 Numerator & Denominator × 3

47. EXAMPLE

48. EXAMPLE Answers ?

49. Adding Fractions with Different Denominators Adding Fractions with Different Denominators 1) 1) a) b) a) b) c) c) d) e) d) e) f) f) 2) 2) a) b) c) a) b) c) d) e) f) d) e) f) John ate of a chicken pie and of a vegetable pie. Sally says John ate more than a whole pie in total. Is Sally correct? John ate of a chicken pie and of a vegetable pie. Sally says John ate more than a whole pie in total. Is Sally correct? 3) 3) c) c) b) b)