Math Definitions

Question 1

What are integers? (4)

Answer 1

Any positive or negative whole number, including zero

Question 2

Integers do not include? (name 3)

Answer 2

fractions (1/2), decimals (0.5), or mixed numbers (1 1/2)

Question 3

Rational numbers include? (name 3)

Answer 3

Rational numbers include all integers, decimals, and fractions

Question 4

Any _______ or ______ decimal number is a _____ number.

Answer 4

termination, repeating, rational number

Question 5

Irrational numbers cannot be written as ________ or _______ .

Answer 5

fractions or decimals

Question 6

What are the rules for adding and subtracting negative numbers?

Answer 6

change the sign of the number AFTER the minus symbol and then FOLLOW the addition rules.

Question 7

The result of division is called

Answer 7

quotient

Question 8

Result of multiplication is called

Answer 8

product

Question 9

If the signs are the SAME, the product or quotient is

Answer 9

positive when multiplying or dividing numbers

Question 10

If the signs are OPPOSITE, the product or quotient is

Answer 10

negative when multiplying or dividing numbers

Question 11

When more than TWO factors are multiplied together, the sign of the product is

Answer 11

determined by how many NEGATIVE factors are presents

Question 12

If there are an odd number of negative factors, then the product is ____ . An even number of negative factors indicates a _____ product.

Answer 12

negative, positive

Question 13

What does 2(4) equal,

Answer 13

2(4) = 2x2x2x2=16

Question 14

What is the common mnemonic for the order of operation?

Answer 14

PEMDAS
Please Excuse My Dear Aunt Sally
Parentheses, Exponents, Multiple, Division, Add, subtraction

Question 15

How are fractions added & subtracted?

Answer 15

A common denominator must be found, then add or subtract the two numerators and retain the common denominator

Question 16

How are fractions multiplied?

Answer 16

multiply the TWO numerators together and the TWO denominators together

Question 17

How are fractions divided?

Answer 17

FLIP the numerator and denominator of the SECOND fraction and then proceed as thought it were multiplication

Question 18

What rule MUST be followed when + & - decimals

Answer 18

Decimal points must always be aligned

Question 19

How do you multiply decimals?

Answer 19

Multiply as though whole numbers. Once the product is calculated, count the number of places to the RIGHT of the decimal in both the multiplicand and the multiplier. Then, count the number of places from the RIGHT of the product and place the decimal in that position.

Question 20

How do you divide with decimals?

Answer 20

The divisor must be CONVERTED into a whole number. Begin by moving the decimal in the divisor to the RIGHT until a whole number is created.
NEXT, move the decimal in the dividend the same number of spaces to the RIGHT.
Example, 4.9 into 24.5 would become 49 into 245. 245/49 =5

Question 21

Percentage to Fraction

Answer 21

% over 100, drop the % sign
then reduce

Question 22

What are base Units (3)

Answer 22

Grams, Liters, Meters

Question 23

mnemonic phrase for metric prefixes

Answer 23

King Henry Died By Drinking Chocolate Milk

Question 24

1 yards + ________ meters

Answer 24

.915