Download presentation

Presentation is loading. Please wait.

Published byRyan Rogers Modified over 4 years ago

1
We are learning to find percentages of 3 digit numbers.

2
What does % mean? per cent for every 100

3
To find 1% of a number ÷ by 100 Find 1% of 225 225 ÷ 100 (move all digits 2 places to the right) 225. 1% of 225 =. 225

4
To find 10% of a number ÷ by 10 Find 10% of 376 376 ÷ 10 (move all digits 1 place to the right) 376. 10% of 376 =.376

5
Can we use this information To find 11% of a number? 10% + 1% = 11%

6
Find 11% of 352 352 ÷ 100 = 352. 3. 5 2 352 ÷ 10 = 3.52 352. 3. 5 2 35.2 3.52 35.2 + 27. 83

7
Find 2% of 453 1% of 453 453 ÷ 100 =4.53 1% x 2 = 2% 4.53 x 2 60 1 9 2 x 3 = 6 2 x 5 = 10 (carry the 1) 2 x 4 = 8 + 1 = 9 The decimal point goes between the 9 and the 0. There are 2 digits after the decimal point in the sum so we need 2 digits after the decimal point in the answer. 2% of 453 =

8
Use these methods to find 12% of 563 Hint: add together 10%, 1% and 1% 56.3 + 5.63 + 5.63 = 16% of 285 Hint: add together 10%, 6 x 1% 28.5 + (6 x 2.85) =

9
Can you find 20% of 621? Hint: 20% = 10% + 10% or 10% x 2 621 ÷ 10 = 62.1 + x 2 124.2 20% of 621 = 124.2

Similar presentations

Presentation is loading. Please wait....

OK

MaK_Full ahead loaded 1 Alarm Page Directory (F11)

MaK_Full ahead loaded 1 Alarm Page Directory (F11)

© 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