# Rounding Decimals - PowerPoint

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```					Rounding
Decimals
Jack and Jill started walking at the
same time. After an hour, Jill
walked 0.36 km while while Jack
walked 0.32 km.

Who do you think
walked the farthest?

Why do you say so?
Let’s compare the distance they have
travelled.
Given these numbers, 0.32 and 0.36

Which of these would mean longer
distance travelled?

Let’s compare them using the
number line.
Study the number line below:
If we round 0.32 and 0.36 to the nearest
tenths, which of these decimals is nearer to
0.4? Look at the hundredths digit

0.36 is nearer to 0.4 than 0.32
0.36 is rounded off as 0.4

Jill walked farther than Jack.
Study these examples:
Now do these:
Concepts
When rounding decimals to the:
Nearest Tenths:
 Look at the hundredths digit.

 When the digit is 0, 1, 2, 3 or 4 the
TENTHS digit remains the same.
 When the digit is 5, 6, 7,8 or 9 the
TENTHS digit is rounded to the next
higher digit.
Concepts

Do the same in rounding
hundredths or thousandths.
Place Value Worms

```
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 views: 33 posted: 10/6/2012 language: English pages: 10
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