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Fractions of an Inch. By Miss O. Measuring to the nearest fraction of an inch. What do all the tick marks represent?. What is between a 1 inch and a 2 inch on a ruler?. The tick marks represent fractions!. Fractions are between each inch on a ruler.

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

What do all the tick marks represent?

What is between a 1 inch and a 2 inch on a ruler?

the tick marks represent fractions
The tick marks represent fractions!

Fractions are between each inch on a ruler.

Using fractions of an inch makes your measuring more EXACT.

benchmark fractions you have to memorize
“Benchmark” Fractions You Have to MEMORIZE!

1

8

3

8

5

8

7

8

1

4

3

4

1

2

0

1

How long is the length of the arrow to the nearest inch?

Benchmark means “standard.”

fractions of an inch song
Fractions of an Inch Song

2

2

1 =

0

1

2

(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!

fractions of an inch song verse 2
Fractions of an Inch Song Verse 2

1 = 2

2 4

4

4

1

4

2

4

3

4

1 =

0

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!

fractions of an inch song verse 3
Fractions of an Inch Song Verse 3

1 = 4

2 8

8

8

1

8

3

8

5

8

7

8

2

8

4

8

6

8

1 =

0

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!

a poem to help us memorize
A Poem to Help Us Memorize

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8

3

8

5

8

7

8

1

4

3

4

1

2

0

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!

finding fractions of an inch worksheet
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.

what if the marks are not labeled
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!
let s practice
Let’s practice!

0

1

inches

How long is the length of the arrow to the nearest fraction of an inch?

Share your answer with a partner!

let s keep practicing
Let’s keep practicing!

0

1

inches

How long is the length of the arrow to the nearest fraction of an inch?

Write your answer in your math notebook.

and some more
And some more!

0

1

inches

How long is the length of the arrow to the nearest fraction of an inch?

Write your answer in your math notebook.

read the directions carefully
Read the directions carefully!

0

1

inches

If the directions say “measure to the nearest inch,” you have 1 option the wholenumber inch!

read the directions carefully1
Read the directions carefully!

1/2

0

1

inches

If the directions say “measure to the nearest half inch,” you have 2 options the wholenumber inch or the ½ inch between!

slide16

If the directions say “measure to the nearest quarter inch,” you have 4 options the wholenumber inch, the ½ inch, or the quarter inches (1/4 and ¾)!

3/4

1/4

1/2

0

1

inches

slide17

If the directions say “measure to the nearest eighth of an inch,” you have 8 options the wholenumber 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

0

1

inches

read the directions and then measure
Read the directions and then measure!

0

1

inches

Measure to the nearest whole inch.

Write your answer in your math notebook.

read the directions and then measure1
Read the directions and then measure!

0

1

inches

Measure to the nearest half inch.

Write your answer in your math notebook.

read the directions and then measure2
Read the directions and then measure!

0

1

inches

Measure to the nearest quarter inch.

Write your answer in your math notebook.

read the directions and then measure3
Read the directions and then measure!

0

1

inches

Measure to the nearest eighth inch.

Write your answer in your math notebook.

read the directions and then measure4
Read the directions and then measure!

2

3

inches

Measure to the nearest eighth inch.

Write your answer in your math notebook.

read the directions and then measure5
Read the directions and then measure!

2

3

inches

Measure to the nearest half inch.

Write your answer in your math notebook.

estimating fractional parts
Estimating Fractional Parts

Estimating means “guesstimating.”

1

8

3

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5

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7

8

1

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3

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1

2

0

1

Using the “benchmark fractions” we have been learning with measuring the nearest inch, we can “guesstimate” fractional parts too!

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