Measuring Equipment

Units of Measurement

Whole Numbers (1, 2, 3)Fractions (1/8”)Decimals (0.392)Metric (1 mm)

Measuring Equipment

Introduction

British Imperial System (U.S.)

Metric System

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British System

Fractions (rulers)InchesFeetyards

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Fractions

A fraction is a number that expresses part of a group. Fractions are written in the form of a/b, where a and b are whole numbers, and the number b is not 0.The number a is called the numerator, and the number b is called the denominator.

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Example

The fraction 4/6 represents the shaded portion of the circle below. There are 6 pieces in the group, and 4 of them are shaded.

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Example #2

The fraction 3/8 represents the shaded portion of the circle below. There are 8 pieces in the group, and 3 of them are shaded.

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Some Rules

Always reduce the fraction to the lowest common denominator.

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Questions

Any questions on what a fractions is?

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Fractions on Rulers

Top = metricBottom = fractions

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Ruler divisions

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Ruler divisions

Rulers can be divided into:

Always reduce the fraction to the lowest common denominator

1/2 1/4 1/8

1/16 1/32 1/64

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Ruler fractions

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Put it all together

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Questions

Questions on fractions or rulers?

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Fractions Quiz

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Answers

A – 8thsB – 1”C – 1/2”D – 1/4”E – 1/8”F - 16ths

G – 1/8”H – 1/8”I – 1/16”J – 1/32”K – 1/64