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Fractions to D ecim als

Students are given a "friendly" fraction to convert to a

decimal. They first model the fraction using a lOX 10 grid.

W ith the model as a guide, they then write and draw an

explanation for the decimal equivalent. A good sequence is

to start w ith halves and fifths, then fourths, and possibly

eighths.

Students are asked to shade Y2of the decimal square. They

then count how many tenths and how many hundredths to

convert to decim als.

Example

Shade 1 2 of the decimal square divided into tenths. Count

how many are shaded out of 10.

5/10 written in decimal form is .5

Shade 1 2 of the decim al square divided into hundredths.

Count how many are shaded out of 100.

50/100 written in decimal form is .50C ontinue w ith the follow ing:

1/5 2/5 3/5

1 4 2/4 %

1/8 2/8 3/8

4/8 5/8 6/8

7/8

This activity is taken from Teaching Student-C entered

Mathematics G rades 3-5 Van de W alle

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Decimal Squares

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Decimal Squares (wholes)

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Decimal Squares (tenths)

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Decimal Squares (thousandths)

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