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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?

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

FRACTIONS OF AN INCH

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

HALF INCH INCREMENTS

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One-quarter inch measures


One-eighth of an inch


Two-sixteenths of an inch

or

One-eighth of an inch


Three-sixteenths of an inch


Four-sixteenths of an inch

or

Two-eighths of an inch

or

One-fourth of an inch


Five-sixteenths of an inch


Six-sixteenths of an inch

or

Three –eights of an inch


Seven-sixteenths 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


Nine-sixteenths of an inch


Ten-sixteenths of an inch

or

Five-eighths of an inch


Eleventh-sixteenths of an inch


Twelve-sixteenths of an inch or

Six-eighths of an inch or

Three-fourths of an inch


Thirteen-sixteenths of an inch


Fourteen-sixteenths of an inch

or

Seven-eighths of an inch


Fifteen-sixteenths of an inch


Sixteen-sixteenths of an inch

or

One inch

ADDING MEASURES

2

1

2

1

2

21

4

1

2

1 4

1

4

2

4

3

FRACTION RULES

RULES

1. To add fractions you must have a

common denominator

2. Reduce fractions

2

1

4

2

COMMON DENOMINATOR

How do you get a common denominator?

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

16 can be the common denominator for

all rulers marked in 16ths.

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

COMMON DENOMINATOR

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

16

6

2

2

8

3

16

12

4

4

4

3

ADDING MEASURES

1 3

8 4

16

12

16

2

1. Get the common denominator

2. Rewrite the fractions

ADDING MEASURES

1 3

8 4

16

12

16

2

16

14



3. Add the numerators

4. Carry the denominator forward

ADDING MEASURES

1 3

8 4

16

12

16

2

16

14 8

7





5. Reduce the answer

ADDING MEASURESwith WHOLE NUMBERS

1 31 28 4 2 12

1 216 16

14316

738

1. Add the whole numbers (like always)






ADDING MEASURES

1 1

2 8 10

168

58 2

16 16

1 1

2 8

8

1

8

4 5

8

ADDING MEASURES

1 1

2 16 8 1

16 16

9

16

REMEMBERCOMMON DENOMINATORADDING & SUBTRACTING

How do you get a common denominator?

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

16 can be the common denominator for

all rulers marked in 16ths.

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

COMMON DENOMINATOR

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

16

6

2

2

8

3

16

12

4

4

4

3

SUBTRACTING MEASURES

3 1

4 8 12 2

16 16




3 1

4 8 12 2

16 16 10

16



3. Subtract the numerators



3 1

4 8 12 2

16 16 10

16 5

8






SUBTRACTING MEASURESwith WHOLE NUMBERS

5 12 18 4 5 2

2 18 8

318

1. Subtract the whole numbers (like always)





6. Reduce, if necessary


1 1

2 8 6

16 38

8 2

16 16

1 1

2 8

4 1

8 8

3

8


1 1

2 16 8 1

16 16

7

16


1 3

2 16

4

1

8

5

8

2

8

5

8 3

16 16

5

16

8

3

MULTIPLYING MEASURES

• One-half of 1 inch means

11

2

or of 1 inch

“of is another way to say times”

MULTIPLYING MEASURES

Two times one-half is

adding one-half two times.

2 X = 1 + =1

read a tape measure. measuring tools tape measure ruler yard stick folding ruler measuring wheel...

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