5/8 numerator denominator Mixed number Improper Fraction MoManWINs Precision Machining Technology ME Measurement, Materials & Safety This workforce solution was funded by a grant awarded by the U.S. Department of Labor’s Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability, or ownership.

Finding a common denominator Put these fractions in order Add these fractions

TI-30 usage Entering Fractions Enter either numerator or whole number that comes first for example 2 ¾ You would enter 2 Press the A b/c key Enter the next number in this case 3 Press the A b/c key Enter the next number in this case 4 Press enter To convert this mixed number into a decimal press the 2 nd button Press the PRB key Press the enter keyThe calculator should display 2.75

Subtracting Fractions Option Two The problem is you can’t subtract 11 from 2 so you have to borrow 1 from the whole number

Fractional/Decimal Conversions Fraction to Decimal 3/8 = Now reduce this 125 goes into times and 125 goes into times Fractional to decimal conversion. What’s the decimal equivalent of 3/8?

What is 1/4 th of 7/16 ? Multiplying Fractions What is 20% of 7/16 ?

What fraction is 75% ? 2 is what percent of 5 ? Dividing Fractions

Basic Operations on Decimals Addition or subtraction Line up the decimals Multiplication.15 X Line up the numbers on the right Now count up the decimal digits and shift the decimal to the left. There are five digits so shift the decimal five places to the left.35625

Decimal Division DivisorDividend Now move the decimal on the Divisor over to the right until it’s a whole number Move the decimal on the dividend the same number of places. Move the decimal on the dividend straight up. Divide like normal.575

Other Resources Your text starting on page 65 Khan Academy Student support center = first floor Student Center

Please Excuse My Dear Aunt Sally Order of Operation or.. 1 st start with parenthesis 2 X 4 = 8 9 – 8 = = 1 Start with parenthesis 9 – 2 = 7 Next Exponent 4 x 4 x 4 = 64 Then multiply what you got in the parenthesis times 64 7 x 64 = 448

Ti-30 Key strokes ( X 4 ) ^ 3 = ( ) 4 ^ 3 = Should be 1 Should be 448 Calculator Key Strokes

Variables What is “a” when c = 3 and b = 2 ? Solve for C Solve for b CA = B

Conversions We need to convert 1 ½ inches into millimeters. There are 25.4 millimeters in one inch 38.1 mm 2 inches We need to convert 50.8 mm into inches

= inches = 4.04 feet We need to convert 1.23 meters into feet There are more direct ways of doing this but lets go the long way since I can’t remember how many feet are in a meter. = 1230 mm Now lets convert millimeters into inches..

3x – 8 = 22 -2x + 15 = 5 + 3x x/2 + 5 = 21 X – 6 = 3x 6y = 4(2y + 9) Some more practice solving equations This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit