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Fractions of an Inch By Miss O.

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**Measuring to the nearest fraction of an inch.**

What is between a 1 inch and a 2 inch on a ruler? What do all the tick marks represent?

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**The tick marks represent fractions!**

Fractions are between each inch on a ruler. Using fractions of an inch makes your measuring more EXACT.

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**“Benchmark” Fractions You Have to MEMORIZE!**

1 8 3 8 5 8 7 8 1 4 3 4 1 2 1 How long is the length of the arrow to the nearest inch? Benchmark means “standard.”

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**Fractions of an Inch Song**

(to the tune of “Here We Go Round the Mulberry Bush”) Tap your tip on a half of an inch, Half of an inch, half of an inch. Tap your tip on a half of an inch; There’s 2 in every inch! 2 1 = 1 2

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**Fractions of an Inch Song Verse 2**

Tap your tip on a quarter of an inch, Quarter of an inch, quarter of an inch. Tap your tip on a quarter of an inch; There’s 4 in every inch! 1 = 2 2 4 4 1 4 2 4 3 4 1 =

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**Fractions of an Inch Song Verse 3**

Tap your tip on a eighth of an inch, Eighth of an inch, eighth of an inch. Tap your tip on a eighth of an inch; There’s 8 in every inch! 1 = 4 2 8 8 1 8 3 8 5 8 7 8 2 8 4 8 6 8 1 =

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**A Poem to Help Us Memorize**

1 8 3 8 5 8 7 8 1 4 3 4 1 2 1 Start with one eighth, then one fourth, Next three-eighths, and half of course! After that comes five-eighths, Three-fourths, seven-eighths—wow, we’re great!

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**Finding Fractions of An Inch Worksheet**

Trace each inch mark in yellow. Trace each half-inch (1/2) mark in orange. Trace each quarter-inch (1/4) mark in red. Trace each eighth-inch (1/8) mark in blue. Trace each sixteenth-inch (1/16) mark in green.

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**What if the marks are NOT labeled?**

Like on MOST rulers… That’s why you have them MEMORIZED… So…you can write them in yourself and still be able to measure to a fraction of an inch!

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Let’s practice! 1 inches How long is the length of the arrow to the nearest fraction of an inch? Share your answer with a partner!

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Let’s keep practicing! 1 inches How long is the length of the arrow to the nearest fraction of an inch? Write your answer in your math notebook.

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And some more! 1 inches How long is the length of the arrow to the nearest fraction of an inch? Write your answer in your math notebook.

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**Read the directions carefully!**

1 inches If the directions say “measure to the nearest inch,” you have 1 option the whole number inch! Nearest Inch Whole number inches only!

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**Read the directions carefully!**

1/2 1 inches If the directions say “measure to the nearest half inch,” you have 2 options the whole number inch or the ½ inch between! Nearest Half Inch Whole number inch ½ inch

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**Quarter of an Inch Whole number inch ½ inch 3/4 1/4 1/2 ¼ or ¾ inch 1**

If the directions say “measure to the nearest quarter inch,” you have 4 options the whole number inch, the ½ inch, or the quarter inches (1/4 and ¾)! 3/4 1/4 1/2 1 inches Quarter of an Inch Whole number inch ½ inch ¼ or ¾ inch

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**Nearest eighth of an Inch**

If the directions say “measure to the nearest eighth of an inch,” you have 8 options the whole number inch, the ½ inch, the quarter inches (1/4 and ¾), or the eighth inches (1/8, 3/8, 5/8, and 7/8)! 1/8 5/8 7/8 3/8 3/4 1/4 1/2 1 inches Nearest eighth of an Inch 1 whole inch ½ inch ¼ or ¾ inch 1/8, 3/8, 5/8, 7/8 inch

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**Read the directions and then measure!**

1 inches Measure to the nearest whole inch. Write your answer in your math notebook.

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**Read the directions and then measure!**

1 inches Measure to the nearest half inch. Write your answer in your math notebook.

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**Read the directions and then measure!**

1 inches Measure to the nearest quarter inch. Write your answer in your math notebook.

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**Read the directions and then measure!**

1 inches Measure to the nearest eighth inch. Write your answer in your math notebook.

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**Read the directions and then measure!**

2 3 inches Measure to the nearest eighth inch. Write your answer in your math notebook.

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**Read the directions and then measure!**

2 3 inches Measure to the nearest half inch. Write your answer in your math notebook.

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**Estimating Fractional Parts**

Estimating means “guesstimating.” 1 8 3 8 5 8 7 8 1 4 3 4 1 2 1 Using the “benchmark fractions” we have been learning with measuring the nearest inch, we can “guesstimate” fractional parts too!

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