HESI MATH REVIEW

how to convert military time AM - }{add a 0 before the first number EX: 9:42 -> 0942

how to convert military time PM - }{Add 12 to the first number EX: 1:28 -> 1328

What is midnight in military time? - }{0000 or 2400

quotient? - }{the answer to a division problem

dividend? - }{the number that is being divided

divisor? - }{the number that divides the dividend

The freezing point of water? - }{0 degrees Celsius and 32 degrees Fahrenheit

The boiling point of water? - }{100 degrees Celsius and 212 degrees Fahrenheit

1 kilometer = - }{1000 meters

1 meter = - }{100 centimeters

1 centimeter = - }{10 millimeters

2.54 cm = - }{1 inch

1 mile = - }{5280 feet or 1760 yards

1 yard = - }{3 feet or 36 inches

1 foot = - }{12 inches (in)

1 liter = - }{1,000 millimeters

1 millimeter = - }{1 cubic centimeter

1 gallon = - }{4 quarts or 8 pints or 16 cups or 128 ounces

1 quart = - }{2 pints

1 pint = - }{2 cups

1 cup = - }{8 ounces

1 ounce = - }{30 millimeters

1 kilogram = - }{1,000 grams

1 gram - }{1,000 milligrams

1 ton = - }{2,000 pounds

2.2 pounds = - }{1 kilogram

Roman Numerals 1-10 - }{1: I 2: II 3: III 4: IV 5: V 6: VI 7: VII 8: VIII 9: IX 10: X 40: XL 50: L 60: LX 90: XC 100: C 500: D 1,000: M

MMXII - }{2012 (1,000 +1,000 + 10 + 12 = 2012)

Ratio? - }{a relationship between 2 numbers

proportions? - }{Two ratios that have equal values

Change the decimal to a ratio (0.025) - }{- change the decimal to a fraction 25/1000

• reduce fraction 25/1000 --> 1/40
• top number listed first, add colon, bottom number is listed 1:40

Fraction to ratio (5/6) - }{Put a colon in place for fraction line 5:6

Solve the Proportion (find the value of X) 7:10::14:X - }{-Rewrite into fraction form 7/10 14/x -multiply diagonally (10x4) = 140

• then divide by the other number 140 divided by 7 = 20
• x = 20

Turning a decimal to a percentage - }{Move the decimal 2 places to the right

Turning a percentage to a decimal - }{Move the decimal 2 places to the left

Changing decimals to fractions - }{-Read it (know decimal places ) -Write it -Reduce it (find GCF, then divide) Example: .02 = two-hundredths = 2/100 = 1/50

• For a number before the decimal, make it into a mixed fraction ( 3.055 -> 3 55/1000 = 3 11/200)

Addition of fractions with common denominator - }{add across the top

EX: 3/7 + 2/7 = 5/7

Addition of fractions with uncommon denominators - }{- Find the LCD by listing the multiples of each denominator 5(5,10,15,20,25,30) 10(10,20,30,40) -multiply. - if the denominator is changed, the numerator must also be changed 1/5 (1x2)(5x2) = 2/10

• Lastly, add the numerators together but keep the denominator. Reduce 2/10 + 7/10 = 9/10

division of fractions (1/2 divided by 3/8) - }{-Invert the second fraction and multiply 1/2 x 8/3 = 8/6

• To reduce, find the GCF and divide by it 8 divided by 2 = 4 6 divided by 2 = 3 4/3

Multiplication of Fractions - }{multiply TOP x TOP and BOTTOM x BOTTOM *To change an improper fraction to a mixed number, divide the numerator by the denominator

LCF - }{Least Common Factor - the first number that's in both of their multiplication lists.

GCF - }{Greatest Common Factor - the biggest number that goes into both numbers.