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2. 1. a. What is 20% of 80? 4 b. Why is four wrong? % Is this answer correct? Next Slide

3. 1. a. What is 20% of 80? 1600 c. Why is one thousand six hundred wrong? % Is this answer correct? Next Slide

4. 1. a. Find 20% of 80. 16 or 16.00 d. Why is this right? 80 x.20 00 160 16 00 % Is this answer correct? Next Slide

5. 2. a. What is 35% of 20? 7.35 b. Why is seven and thirty-five hundredths wrong? % Is this answer correct? Next Slide

6. 2. a. What is 35% of 20? 700 c. Why is seven hundred wrong? % Is this answer correct? Next Slide

7. 2. a. Find 35% of 20. What is 35% of 20? d. How can you check that seven is right? 20 x.35 100 60 7.00 Next Slide

8. 3. a. There is a discount of 25% off on a £60 pair of shoes. How much are the shoes? £25 b. What fraction is 25% the same as? % Next Slide

9. 3. a. There is a discount of 25% off on a £60 pair of shoes. How much are the shoes? £15 c. What is a quarter of £60? % Next Slide

10. 3. a. There is a discount of 25% off on a £60 pair of shoes. How much are the shoes? Now provide the actual answer. d. Why is forty-five pounds correct? £60 x.25 300 120 £15.00 £60 - 15 £45 Next Slide

11. 4. a. A shirt cost £30 plus 7% tax. What is the total cost? £37 b. Why is thirty-seven pounds wrong? % Is this answer correct? Next Slide

12. 4. a. A shirt cost £30 plus 7% tax. What is the total cost? What is 7% of £30? (ans. in pounds) % Next Slide

13. 4. a. A shirt cost £30 plus 7% tax. What is the total cost? Now answer! d. Why is thirty-two pounds and ten pence correct? £30 x.07 £2.10 £30.00 + 2.10 £32.10 Next Slide

14. 5. a. A £300 bike is on sale. How much is the cost? £275 b. Why is two hundred seventy-five pounds wrong? % Next Slide

15. 5. a. A £300 bike is on sale. How much is the cost? £75 c. Why is seventy-five pounds wrong? % Next Slide

16. 5. a. A £300 bike is on sale. How much is the cost? Now answer d. Why is two hundred twenty-five pounds correct? £300 x.25 1500 60 £75.00 £300 - 75 £225 Next Slide

17. Remember how to Next Slide

18. I really understand this and I got most of them correct. I am beginning to understand this and I got many of them correct. I need more practice to help me understand this and I made lots of mistakes. A B C LO: To use decimal fractions to calculate Next Slide