Negative Numbers Flashcards Preview

Math > Negative Numbers > Flashcards

Flashcards in Negative Numbers Deck (18):
0

Define a negative number:

A negative number is a number below zero. It is written with a - in front of it.
Ex:-5
On a number line, negative numbers are written like positive numbers, but in decreasing order.
-5 -4 -3 -2 -1 0 1 2 3 4 5

1

How do you add negative numbers?

When adding a negative number to a positive number, you always go nearer the positive side.
Ex:-13+5=-8
-3+6=3
When adding two negative numbers, you always go further into the negative side.
Ex:-2+-5=-7

2

How do you substract negative numbers?

When substracting a negative number from a positive number, the minus cancels out and you just add two positive numbers.
Ex:14--6=20
When substracting a positive number from a negative number,you go further into the negative side.
Ex:-13-6=-19
When substracting a negative number from a negative number, you go closer to the positive side.
Ex:-15--16=1

3

How do you multiply negative numbers?

When multiplying negative numbers with positive numbers, you always get a negative number.
Ex:-3x4=-12
When multiplying negative numbers with negative numbers, you always get a positive number.
Ex:-3x-4=12

4

How do you divide negative numbers?

When dividing negative numbers from positive numbers, you always get a negative number.
Ex:16:-4=-4
When dividing positive numbers from negative numbers, you always get a negative number.
Ex:-16:4=-4
When dividing negative numbers from negative numbers, you always get a positive number.
Ex:-16:-4=4

5

-5+-5=?

-10

6

-9+6=?

-3

7

-15--5=?

-10

8

-15-14=?

29

9

15--7=?

22

10

12x-5=?

-60

11

-12x-5=?

60

12

70:-35=?

-2

13

-70:-35=?

2

14

-70:35=?

-2

15

Give fraction equivalent of -12:3.

There is no fraction equivalent. Negative numbers cannot be put into fractions.

16

-5:2=?

-2.5
Negative numbers can be decimal.

17

-2x-3x-3=?

-2x9
-18