Download presentation

Presentation is loading. Please wait.

Published byOwen Brett Cunningham Modified over 8 years ago

2
5 + (-9) is read: positive 5, negative 9 5 – 9 is read: positive 5, negative 9 -15 + 8 is read: negative 15, positive 8 -7 + (-10) is read: negative 7, negative 10 -57 – 57 is read: negative 57, negative 57

3
16 – (- 4) is read: 16 minus negative 4 -5 – (- 10) is read: negative 5 minus negative 10 12 – (- 18) is read: 12 minus negative 18 6 – 10 – (- 3) is read: positive 6, negative 10 minus negative 3 - (- 10) – 3 + 4 is read: minus negative 10, negative 3, positive 4

4
16 + (+ 4) is read: positive 16, positive 4 -5 + (+ 10) is read: negative 5, positive 10 12 + (+ 18) is read: positive 12, positive 18 6 – 10 + (+ 3) is read: positive 6, negative 10, positive 3 + (+ 10) – 3 + 4 is read: positive 10, negative 3, positive 4

5
-15 + (-5) is read: negative 15, negative 5, ADD these numbers =20, keep the sign, answer -20 -57 – 57 is read: negative 57, negative 57, ADD these numbers =114, keep the sign, answer -114 18 – (- 4) is read: 18 minus negative 4, becomes 18 + (+ 4) is read: positive 18, positive 4, ADD these numbers =22, keep the sign, answer +22

6
2.7 + (- 5.2) is read: positive 2.7, negative 5.2, SUBTRACT these numbers =2.5, keep the sign of the bigger number, answer -2.5 -3 – (- 5) is read: negative 3 minus negative 5, changed to -3 + (+ 5), SUBTRACT these numbers =2, keep the sign of the bigger number, answer +2

7
A positive number is an elevator ride up and a negative number is an elevator ride down. -10 – 3 + 4: down 10, down 3, up 4, you are on the negative 9 ‘floor’, answer is -9 -15 + 10 + (- 5): down 15, up 10, down 5, you are on the negative 10 ‘floor’, answer is -10 -3 + 3 + 10: down 3, up 3, up 10, you are on the positive 10 ‘floor’, answer is +10

8
5 + (-5) = 0 - 3 + 8 = 5 - 10 – 3 + 4 = - 9

9
Positive 7, negative 6, positive 1, answer is +2 Positive 8, positive 1, negative 5, answer is +4

Similar presentations

© 2023 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