Algebra Basics 1

Question 1

Minus, Minus a Minus

-2 - (-3)

Answer 1

1

Question 2

Positive, Minus a Minus

5-1(-1)

Answer 2

6

Question 3

Negative x Positive
Positive x Negative

-2 x 3 =
3 x -2 =

Answer 3

-6

Neg x Pos = Neg
Pos x Neg = Neg

Question 4

-2 x -3

Neg x Neg

Answer 4

6

Neg x Neg = Pos

Question 5

8/-2 =

Pos / Neg

Answer 5

-4

Pos/Neg = -4

Question 6

16/4

Answer 6

Top / Bottom

Question 7

-7 X 3
————
-1

Answer 7

Top First = -21

-21/ (-1) = 21

Question 8

Exponents

2^3

Answer 8

2x2x2 = 8

Question 9

Anything to the power of 0 is

Answer 9

1

Question 10

0.2^3

Answer 10

0.008

Question 11

Definition of square root

Answer 11

What number times its self gets this number.

Question 12

How to figure if something is divisible by three?

Answer 12

Do the digits themselves add up to 3,6 or 9

Question 13

How to fond the common denominator with prime numbers?

Answer 13

Times them both together.

Question 14

How to multiply fractions.

7 7
- x -
14 32

Answer 14

Just times across

7x7 =

14x32 =

Question 15

Dividing a fraction

-5/6 Divided by 3/4

Answer 15

Flip the right one

So -5/6 / 3/4

Becomes -5/6 x 4/3

Then just times across again

-20/18 = simplify -10/9

Question 16

6/20 as a percentage

Answer 16

Times both by five

30/100 = 30%

Question 17

What is the order of operations

Answer 17

1) Parentheses
2) Exponents
3) multiplication/ Division
4) Addition/Subtraction

Question 18

(7+3)x4 /2 -5 x6

Answer 18

1) (7+3) = 10
2) 10 x 4 = 40
3) (40/2) - (5x6)
4) 20 - 30

Question 19

EQ for area of a square, rectangle or parallelogram

Answer 19

Base x Height

Question 20

Equation for a triangle

Answer 20

Half base x height

Question 21

Equasion for a circle circumference

Answer 21

C=2pir

C = two pi’s x two radii

Question 22

Eq for a circle area

Answer 22

A = pi r squared

Question 23

Circles

1) centre to edge
2) edge to edge
3) around the circle

Answer 23

1) Radius
2) Diameter x Radii
3) circumferance

Question 24

Where does pi come from

Answer 24

Pi is the ratio of 3.14159/1

Of circumference/Diameter

Question 25

What is done to one side of an EQ must be done to the other.

Answer 25

X

Question 26

What is a variable

Answer 26

The part of a question/expression that can change.

Question 27

Long Multiplication

123x43

Answer 27

Top layer tikes the first number 121 x 3

Next number plus an 0

Add the rows together

121
43 x
——-
363
4840

Question 28

Multiplying Decimals

Answer 28

32.12 x 0.5

Times the whole numbers.

Then how many numbers past the decimal you are then put the decimal there.