Adding and Subtracting Negative Numbers

🎬 Video Tutorial

Membership Required

You must be a member of Math Angel Plus or Math Angel Unlimited to view this content.

Join Now

Already a member? Log in here

(0:01) What are Negative Numbers?: Negative numbers have a minus sign; positive numbers don’t. Zero is neutral, meaning it’s neither positive nor negative.
(0:21) Adding and Subtracting Negative Numbers on a Number Line: To add a positive number, move right. To subtract a positive number, move left. To add a negative number, move left. To subtract a negative number, move right.
(1:42) Rules for Adding and Subtracting Negative Numbers (Removing Brackets): When removing brackets, two of the same signs (e.g., minus-minus) become a plus. Opposite signs (e.g., plus-minus) become a minus.

📂 Revision Cards

Number line showing negative and positive numbers from -5 to 5, with zero as neutral, labelled "Understanding Negative Numbers". — 1) Understanding Negative Numbers

Number line visual for adding and subtracting negative numbers, showing (-7) + 5 = -2 with a move right and (-6) - 3 = -9 with a move left. ? — 2) Adding and Subtracting Negative Numbers Using Number Line

Rules for removing brackets in addition and subtraction: same signs become plus, different signs become minus. — 3) Rules for Removing Brackets for Addition and Subtraction

Steps to remove brackets with multiple numbers, solving -12 - (-12 + 5) by solving inside first or applying the rule to change signs. Result is -5. — 4) Adding and Subtracting Negatives with Brackets

🍪 Quiz Time - Practice Now!

0%

Adding and Subtracting Negative Numbers

1 / 6

Q: If the temperature is $–5^\circ\text{F}$ and increases by $12^\circ\text{F}$, what is the new temperature?

$-7^\circ\text{F}$

$7^\circ\text{F}$

$-17^\circ\text{F}$

$17^\circ\text{F}$

2 / 6

Q: Simplify –7 – (–4) + (–2).

-5

-3

-9

-1

3 / 6

Q: Simplify –12 + (–8) – (–15).

-10

-25

-5

-15

4 / 6

Q: If you owe £20 and pay back £8, how much do you still owe?

£-8

£-28

£28

£12

5 / 6

Q: Simplify (–14 + 5) – (–10 – 7).

18

-16

6

8

6 / 6

Q: A submarine is at –120 meters below sea level. It ascends 50 meters and then descends 30 meters. What is its final depth?

-100 meters

-90 meters

-140 meters

-50 meters

Your score is

The average score is 50%

0%

🎩 AI Math Solver (ChatCat)

Need math help? Chat with our AI Math Solver at the bottom right!

Adding and Subtracting Negative Numbers

🎬 Video Tutorial

Membership Required

📂 Revision Cards

🍪 Quiz Time - Practice Now!

🎩 AI Math Solver (ChatCat)

Leave a Comment Cancel reply

Log In