Download presentation

Presentation is loading. Please wait.

Published byHaleigh Wingard Modified over 4 years ago

1
Chris Clements Negative Numbers Differences using positive and negative numbers -6 -3 -11

2
Learning Objective: LO: I can find the difference between positive and negative integers.

3
Negative numbers Negative numbers are the result of a bigger number being subtracted from a smaller number. -38=5- 109876543210-2-3-4-5

4
Negative numbers Negative numbers are often used when calculating temperatures. When using degrees centigrade (ºC) a temperature below freezing is shown by a negative number. -10 -5 0 5 10 ºC The thermometer is showing that the temperature is - 6ºC. The higher the positive number the warmer the temperature. The lower the negative number the colder the temperature. REMEMBER: -1 is the highest whole negative number.

5
Negative numbers What is the difference between the following numbers? -34 543210-2-3-4-5 The answer is 7 An efficient method for doing this calculation is to add together the positive number to the negative number; So 4 + 3 = 7 the difference is 7.

6
Negative numbers Using the method shown can you find the difference between the following numbers? -29 -86 12 -724 -918 -1232 1114 1327 31 44

7
Negative numbers What is the difference between the two temperatures? -10 -5 0 5 10 ºC -10 -5 0 5 10 ºC -6ºC9ºC The difference is 15ºC

8
Negative numbers What is the difference between the two temperatures? -10 -5 0 5 10 ºC -10 -5 0 5 10 ºC -9ºC12ºC The difference is 21ºC

9
Negative numbers What is the difference between the two temperatures? -12ºC23ºC SpainSweden 35ºC -27ºC39ºC MexicoIceland 66ºC

10
Negative numbers What is the difference between the two temperatures? -8ºC-3ºC UKNorway 5ºC -27ºC-15ºC CanadaIceland 12ºC When finding the difference between two negative temperatures simply take away the lowest temperature from the highest temperature.

11
1) Difference between a negative number and a positive number (add numbers together) Steps to success Difference is 8 + 7 = 15ºC 2) Difference between two negative numbers; lower negative number subtract the higher negative number. 7ºC-8ºC-11ºC-7ºC Difference is 11 - 7 = 4ºC

12
Activity

13
Plenary How much colder is it in Birmingham than Paris? 01-0.50.5 Which two numbers have a difference of 2? 1.5 -10 -5 0 5 10 ºC -10 -5 0 5 10 ºC Birmingham Paris The following day the temperature in Paris is 4ºC. Birmingham is 8ºC colder. What is the temperature in Birmingham? 4ºC-4ºC

Similar presentations

Presentation is loading. Please wait....

OK

KS3 Mathematics N2 Negative numbers

KS3 Mathematics N2 Negative numbers

© 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