Download presentation

Presentation is loading. Please wait.

Published byMelanie Holden Modified over 4 years ago

3
Objectives: Calculate percentages using non-calculator methods. Calculate percentages less than 10% and values other than multiples of 10. Vocabulary:

4
4050012070 5025072060 901408601800 205000300480 T3.1B 20 is 50% of 40. 500 is 10% of 5000 Find three more percentage relationships on the target board. 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

5
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

6
60 10% 20% 30% 40% 50% 60% On a copy of the spider diagram fill in the amounts. W/S 3.1B

7
60 10% 20% 30% 40% 50% 60% 6 12 1824 30 36 Answers:

8
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 £24so 5% of £240 is £12. Find 5% of £720 – explain how you got the answer. 10% of £720 is £72 so 5% of £720 is £36 0% 100% 0£240 10% £24

9
400501200700 5002472600 80140401800 20800300120 T3.2B Find 5% of each amount as it is highlighted

10
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 305% of 300 is 1515% is 30 + 15 = 45 0%100% 0 300 10% 30 15% 45

11
400501200700 5002472600 80140401800 20800300120 Find 15% of each number as it is highlighted. T3.2B

12
60 15% 25% 10% 5% 45% 55% 35% 95% 17.5% Complete a spider diagram like the one above. W/S3.2B

13
60 15% 25% 10% 5% 45% 55% 35% 95% 17.5% Answers 6 915 3 27 33 21 57 10.5

14
If I can find 10% how can I find 1%? Example: Find 1% of £350 1% is the same as 1/100 th so I can divide by 100 £350 ÷ 100 = £3.5 written £3.50 1% is 10% divided by 10. 10% of £350 is £35 so 1% is £35 ÷10 = £3.5 or £3.50 Method 1 Method 2

15
4050012070 5025072060 901408601800 205000300480 State 1% of each number as it is highlighted. T3.1B

16
Objectives: Calculate percentages using non-calculator methods. Calculate percentages less than 10% and values other than multiples of 10. Vocabulary:

17
Thank you for your attention

Similar presentations

Presentation is loading. Please wait....

OK

0 x0 0. 0 x2 0 0 x1 0 0 x3 0 1 x7 7 2 x0 0 9 x0 0.

0 x0 0. 0 x2 0 0 x1 0 0 x3 0 1 x7 7 2 x0 0 9 x0 0.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google

Download ppt on teamviewer 7 Ppt on brand marketing companies Ppt on boilers operations analyst Ppt on do's and don'ts of group discussion techniques Ppt on 7 wonders of india Ppt on eye osmolarity Hrm ppt on recruitment portal Ppt on mental health act Ppt on water activity measurement Doc to ppt online