Number

Question 1

What is the order of operations?

Answer 1

Brackets
Exponents
Division
Multiplication
Addition
Subtraction

Question 2

Negative x Positive = ?

Answer 2

Negative e.g. -8x6 = -48

Question 3

Positive x Negative = ?

Answer 3

Negative e.g. 4 x -10 = -40

Question 4

Negative x Negative = ?

Answer 4

Positive e.g. -3 x -3 = 9

Question 5

Positive x Positive = ?

Answer 5

Positive 7 x 12 = 84

Question 6

If there are more negatives than positives will the outcome be positive or a negative?

Answer 6

Negative

Question 7

If there are more positives than negatives will the outcome be positive or negative?

Answer 7

Positive

Question 8

In the equation -4 - -2 the minus and the negative cancel each other out and become a…

Answer 8

+ the answer will be -2

Question 9

What are factors?

Answer 9

The numbers that multiply together to make another

Question 10

What kind of number only has two factors?

Answer 10

A prime number its only factors will be one and itself

Question 11

What is the highest common factor (HCF) of two or more numbers?

Answer 11

The highest number that occurs in the lists of factors you are interested in

Question 12

What are the multiples of 6?

Answer 12

6, 12, 18, 24, 30, 36, 42…

Question 13

How do you find the multiples of a number?

Answer 13

Multiply the number you are interested in by the counting numbers

Question 14

LCM?

Answer 14

Lowest Common Multiple

Question 15

How do you find the LCM?

Answer 15

List the multiples of the numbers you are interested in and find the lowest number both lists have in common

Question 16

What do exponents indicate?

Answer 16

Repetitive multiplication. E.g. 5 to the power of 3 = 5 x 5 x5 = 125 or 2 to the power of 2 = 2 x 2 = 4

Question 17

What if you get an equation such as.. (-4)to the power of 2?

Answer 17

= -4 x -4 = 16

=negative x negative = positive

Question 18

What about? (3 x 4) to the power of 2?

Answer 18

Use BEDMAS to solve. Start with the brackets 4 x 3 = 12

Then multiply by the exponent 12 to the power of 2 = 144

Question 19

What are the significant figures in a number?

Answer 19

The total number of digits that are needed to accurately represent a number.

Question 20

When are zeros significant?

Answer 20

When they are inbetween other significant digits. When working out whether a zero is significant or not thing is the zero adding detail or is it just a place holder?

Question 21

When are zeros unsignificant?

Answer 21

At the front and end of a number e.g. 0.003 1sf

Question 22

How do you round something with more than 2sf too 2sf?

Answer 22

Cut the number off after the first two sf and then use place holders to maintain value.