MATH Flashcards
Celsius to farenheit:
C x 9/5 +32= F
Farenheit to celsius:
(F - 32) x 5/9= C
King Henry Died by Drinking Chocolate Milk
Kilo (1,000) Hecto (100) Deca (10) -- UNIT -- Deci (0.10) Centi (0.01) Milli (0.001)
Roman numerals \_\_\_\_\_\_\_\_\_\_\_\_\_\_ I V X
1
5
10
2.54 centimeters=
1 inch
1 mile= ___ yards
1,760 yards
1 mile= ___ feet
5,280 feet
1 yard=
3 feet
1 gallon= __ quarts
4 quarts
1 gallon= __ ounces
128 ounces
1 quart=
2 pints
1 pint=
2 cups
1 cup=
8 ounces
1 ounce=
30 millimeters
1 ton=
2,000 pounds
1 pound=
16 ounces
2.2 pounds=
1 kilogram
percent formula
18 IS 50% of what number?
set up problem:
18/X=50/100
IS= number is on top
percent formula
68% OF 45
set up problem:
68/100=x/45
OF= number is on bottom
When going from decimal -> percent:
Move the decimal point over to the RIGHT 2 spaces
When going from percent -> decimal:
Move the decimal point over to the LEFT 2 spaces
When going from fraction -> percent:
Divide fraction, convert decimal to a percent by moving the decimal point over to the RIGHT 2 spaces
When going from decimal -> ratio:
- Convert decimal to a fraction (0.25= 25/100) then reduce
- Express the reduced fraction as a ratio
_______ of fractions do not need common denominators:
Multiplication and division
_______ of fractions must have a common denominators:
Addition and subtraction
Division of decimals rule:
What you do to one side, you must do to the other side
Multiplication of decimals rule:
- Count how many decimal places each number you are multiplying has, the move the decimal place over that many times to the left in the answer
- For example: 1.75 X 2.5= 4.375 (decimal spot is moved to the left 3 spaces)
