Download Presentation
## Level 4/5 Booster

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**Level 4/5 Booster**Lesson 3B Fractions, decimals and percentages 2**Objectives:**• Calculate percentages using non-calculator methods. • Calculate percentages less than 10% and values other than multiples of 10. Vocabulary: multiple Equivalent recurring decimal**T3.1B**500 is 10% of 5000 20 is 50% of 40. 50 is 20% of 250 120 is 25% of 480 90 is 5% of 1800 70 is 50% of 140 60 is 50% of 120 120 is 40% of 300 250 is 50% of 500 90 is 75% of 120 Find three more percentage relationships on the target board.**What is 10% of £380?**How did you work out 10% of £380? How can you use the answer for 10% to find 20%? 20% = 10% + 10% = £38 + £38 = £76 How can you use 10% to find 30%? 30% = 10% + 10% + 10% = 3 x £38 = £114**W/S 3.1B**10% 60% 50% 20% 60 30% 40% On a copy of the spider diagram fill in the amounts.**Answers:**10% 60% 6 36 50% 20% 60 30 12 30% 40% 24 18**How many times will 5% fit into 10%?**How can you work out 5% if you know 10%? Find 5% of £240 – explain how you got your answer. 10% of £240 is £24 so 5% of £240 is £12. 10% 0% 100% 0 £240 £24 Find 5% of £720 – explain how you got the answer. so 5% of £720 is £36 10% of £720 is £72**T3.2B**Find 5% of each amount as it is highlighted**How can you find 15% of an amount?**15% can be found by adding 10% and 5% together. Find 15% of 300 – explain your working. 10% of 300 is 30 5% of 300 is 15 15% is 30 + 15 = 45 15% 10% 0% 100% 0 300 30 45**T3.2B**Find 15% of each number as it is highlighted.**W/S3.2B**25% 15% 10% 17.5% 5% 60 45% 95% 35% 55% Complete a spider diagram like the one above.**Answers**25% 15% 10% 9 15 6 17.5% 10.5 5% 3 60 45% 57 95% 27 21 33 35% 55%**If I can find 10% how can I find 1%?**Example: Find 1% of £350 Method 1 1% is the same as 1/100th so I can divide by 100 £350 ÷ 100 = £3.5 written £3.50 Method 2 1% is 10% divided by 10. 10% of £350 is £35 so 1% is £35 ÷10 = £3.5 or £3.50**T3.1B**State 1% of each number as it is highlighted.**Objectives:**• Calculate percentages using non-calculator methods. • Calculate percentages less than 10% and values other than multiples of 10. Vocabulary: multiple Equivalent recurring decimal