MEASUREMENTS Fractionaldecimal equivalents There are several uses for

MEASUREMENTS

Fractional/decimal equivalents There are several uses for equivalents for fractions in our shop. We need to know that ½ is. 500 To use taps and dies To use construction tools To use in metals projects during construction

Decimal Values . 500. 5= tenths. 50= first 0 represents hundredths. 500= second zero represents thousanths

Fractions The fractions we will deal with are as follows: 1/8, ¼, 3/8, ½, 5/8, ¾, 7/8, 1 =. 125 3/8= 1/8=. 375

ONE FOURTH ¼= . 250

One half ½= Five eighths. 500

Five Eighths 5/8=. 625

Three Fourths ¾= . 750

Seven Eights 7/8= . 825

Whole Pie 1/1= 1 any number over itself is equal to 1

Division The decimal equivalent is found in 1/8 by dividing 8 into 1 or divide 8 by one either way is correct. Your answer is ? Now take calculator and divide 1 by 8. What is your answer? Call on student. Now how would we find the equivalent of ¼ Now let’s try doing the hand out and finish answers to the third place from decimal point. Hand out sheet

One eighth 1/8= . 125

Trade of Thought 1/8=. 125 If you add two 1/8 you get. 125 +. 125 =. 250 = 1/4 How do I know this is correct. Divide 1 by 4 on your calculator=. 250 Because if you add two eighths which is. 125 +. 125 =. 250 or 1/4 If you add two ¼ together you get. 250 +. 250 =. 500 or 1/2

One Half ½= . 500

Conclusion of Handout How do we find fraction equivalents? Divide the top number by the bottom number with a calculator if you need to complete answer. Now let’s use this in construction. The dowel is half of the thickness of the piece of wood used. We need to put a dowel joint on a table and legs. How do we determine the size of the dowel.

Dowel Joint The piece being used is ¾” thick the dowel needs to be half of this dimension. We need to use a. 375 dowel or 3/8”. Give dowel joint demonstration. Show what dowel jig looks like and how it is centered. Show dowel center. Drill both holes according to width of boards.

Three eighths

Dowel joint demo Show to figure dowel width. Show holes in matching pieces of wood Show dowel center Show drilling of matching hole Show dowel pin Show completed joint

How Do We Convert Fractions to Decimals We divide The Bottom Number into the top number. Or we divide the denominator into the numerator. 1 Numerator _ 8 Denominator Take calculator and divide eight into one =. 125 1/8=. 125