Pre-Algebra Fundamentals

Question 1

What is a REAL number?

Answer 1

A number that can be plotted on a number line

You just need to know that real numbers are not imaginary.

Question 2

What is an INTEGER?

Answer 2

A whole number

Includes negative numbers and zero. Fractions and decimals are not inte

Question 3

What is an UNDEFINED fraction?

Answer 3

A fraction with ZERO in the denominator

For example, 6/0 and x/0 are undefined

See asymptotes for a specific use

Question 4

What are RATIONAL numbers?

Answer 4

Numbers that can be expressed as ratios

Includes integers, fractions and SOME decimals

Examples: 4, 1/2 and 2.5. 2.5 is rational because it’s the same as 5/2

Question 5

What are IRRATIONAL numbers?

Answer 5

Numbers that aren’t rational

The only examples tested are √2, √3 and π

See rational numbers

Question 6

PEMDAS

Order of operations

Answer 6

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Question 7

Absolute Value

Answer 7

Content within absolute value signs should be converted
to positive (if positive, stays positive; if negative, changes
to positive). Do calculating BEFORE converting.

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Question 8

Prime Number

Answer 8

A number divisible by only itself and 1

The only even prime number is 2. Other examples are 3, 7, and 23.

Question 9

Least Common Multiple

Answer 9

The smallest number evenly divisible by 2 numbers

Relevant to common denominators. Example, LCM of 12 and 15 is 60.

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Question 10

Remainder

Answer 10

The leftover amount after division, if it’s not an even division.

Example repeating decimal question

Question 11

Adding Fractions

Answer 11

Find a common denominator, then add numerators

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Question 12

Denominator

Answer 12

The bottom value in a fraction

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Question 13

Numerator

Answer 13

The top value in a fraction

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Question 14

subtracting fractions

Answer 14

Find a common denominator, then subtract the numerators.

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Question 15

Multiplying fractions

Answer 15

Multiply numerators, then multiply denominators

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Question 16

Dividing fractions

Answer 16

Multiply by the reciprocal

Question 17

Reciprocal

Answer 17

Switch top and bottom of a fraction

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Question 18

Repeating decimal

Answer 18

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Question 19

Percent formula

Answer 19

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Question 20

Percent increase

Answer 20

you’re finding the percent of the original number

Question 21

Percent decrease

Answer 21

Find the percent of the original number

Question 22

Stepwise percents

Answer 22

don’t add the percents!

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Question 23

Part to part ratio

Answer 23

compare two pieces of a whole

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Question 24

part to whole ratio

Answer 24

compare piece to whole

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Question 25

part ot part vs part to whole

Answer 25

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Question 26

Units imperial and metric

Answer 26

“per” type units

Question 27

make exponents cards

Question 28

simplify square roots

Question 29

Unit conversion

Question 30

mean

Question 31

median

Question 32

mode

Question 33

range

Question 34

standard deviation

Question 35

line of best fit

Question 36

boxplot

Question 37

adding radicals

Question 38

multiplying radicals

Question 39

dividing radicals