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Read a tape measure. Measuring tools. Tape measure Ruler Yard stick Folding ruler Measuring wheel Scale ruler. QUESTIONS. Who wants to maximize their proficiency? Which tool do you think is a primary measuring tool in the Automotive field?

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Measuring tools
Measuring tools

  • Tape measure

  • Ruler

  • Yard stick

  • Folding ruler

  • Measuring wheel

  • Scale ruler


Questions
QUESTIONS

  • Who wants to maximize their proficiency?

  • Which tool do you think is a primary measuring tool in the Automotive field?

  • Today you are going to learn how to use a ruler to make proper measurements in whole and fractional units.


Fractions of an inch
FRACTIONS OF AN INCH

HALF INCH INCREMENTS

http://www.rickyspears.com/rulergame/


Fractions of an inch1
FRACTIONS OF AN INCH

One-quarter inch measures


Fractions of an inch2
FRACTIONS OF AN INCH

One-eighth of an inch


Fractions of an inch3
FRACTIONS OF AN INCH

Two-sixteenths of an inch

or

One-eighth of an inch


Fractions of an inch4
FRACTIONS OF AN INCH

Three-sixteenths of an inch


Fractions of an inch5
FRACTIONS OF AN INCH

Four-sixteenths of an inch

or

Two-eighths of an inch

or

One-fourth of an inch


Fractions of an inch6
FRACTIONS OF AN INCH

Five-sixteenths of an inch


Fractions of an inch7
FRACTIONS OF AN INCH

Six-sixteenths of an inch

or

Three –eights of an inch


Fractions of an inch8
FRACTIONS OF AN INCH

Seven-sixteenths of an inch


Fractions of an inch9
FRACTIONS OF AN INCH

Eight-sixteenths of an inch or

Four-eighths of an inch or

Two-fourths of an inch or

One-half of an inch


Fractions of an inch10
FRACTIONS OF AN INCH

Nine-sixteenths of an inch


Fractions of an inch11
FRACTIONS OF AN INCH

Ten-sixteenths of an inch

or

Five-eighths of an inch


Fractions of an inch12
FRACTIONS OF AN INCH

Eleventh-sixteenths of an inch


Fractions of an inch13
FRACTIONS OF AN INCH

Twelve-sixteenths of an inch or

Six-eighths of an inch or

Three-fourths of an inch


Fractions of an inch14
FRACTIONS OF AN INCH

Thirteen-sixteenths of an inch


Fractions of an inch15
FRACTIONS OF AN INCH

Fourteen-sixteenths of an inch

or

Seven-eighths of an inch


Fractions of an inch16
FRACTIONS OF AN INCH

Fifteen-sixteenths of an inch


Fractions of an inch17
FRACTIONS OF AN INCH

Sixteen-sixteenths of an inch

or

One inch



Fraction rules
FRACTION RULES

RULES

1. To add fractions you must have a

common denominator

2. Reduce fractions


Common denominator
COMMON DENOMINATOR

How do you get a common denominator?

8 can be the common denominator when the fractions are in fourths or eighths.

16can be the common denominator for

all rulers marked in 16ths.

Use 32as the common denominator when the ruler is marked in 32nds.


Common denominator1
COMMON DENOMINATOR

Multiply top and bottom by the same value to change the denominator correctly.


Adding measures1
ADDING MEASURES

  • Get the common denominator

  • Rewrite the fractions


Adding measures2
ADDING MEASURES

  • Get the common denominator

  • Rewrite the fractions

  • Add the numerators

  • Carry the denominator forward


Adding measures3
ADDING MEASURES

  • Get the common denominator

  • Rewrite the fractions

  • Add the numerators

  • Carry the denominator forward

  • Reduce the answer


Adding measures with whole numbers
ADDING MEASURESwith WHOLE NUMBERS

  • Add the whole numbers (like always)

  • Get the common denominator

  • Rewrite the fractions

  • Add the numerators

  • Carry the denominator forward

  • Reduce the answer




Remember common denominator adding subtracting
REMEMBERCOMMON DENOMINATORADDING & SUBTRACTING

How do you get a common denominator?

8 can be the common denominator when the fractions are in fourths or eighths.

16can be the common denominator for

all rulers marked in 16ths.

Use 32as the common denominator when the ruler is marked in 32nds.


Common denominator2
COMMON DENOMINATOR

Multiply top and bottom by the same value to change the denominator correctly.


Subtracting measures
SUBTRACTING MEASURES

  • Get the common denominator

  • Rewrite the fractions


Subtracting measures1
SUBTRACTING MEASURES

  • Get the common denominator

  • Rewrite the fractions

  • Subtract the numerators

  • Carry the denominator forward


Subtracting measures2
SUBTRACTING MEASURES

  • Get the common denominator

  • Rewrite the fractions

  • Subtract the numerators

  • Carry the denominator forward

  • Reduce the answer


Subtracting measures with whole numbers
SUBTRACTING MEASURESwith WHOLE NUMBERS

  • Subtract the whole numbers (like always)

  • Get the common denominator

  • Rewrite the fractions

  • Subtract the numerators

  • Carry the denominator forward

  • Reduce, if necessary





Multiplying measures
MULTIPLYING MEASURES

  • One-half of 1 inch means

or of 1 inch

“of is another way to say times”


Multiplying measures1
MULTIPLYING MEASURES

Two times one-half is

adding one-half two times.

2 X  = 1 +  =1


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