November 01, 2011
Rounding Decimals
November 01, 2011
Jennifer completed her race in 96.78 seconds.
Round 96.78 seconds to the nearest tenth of a
second.
How to round to the nearest tenth:
96.78
The original
number
96.78
Look at the
hundredths digit
s
Ye
Is the hundredths
digit less than 5?
No
x
Keep the digit
the same
96.8
Round up
Jennifer's time, rounded to the nearest tenth of a second,
was 96.8 seconds.
November 01, 2011
Jennifer ran another race. Her time for this race was
107.44 seconds. Round 107.44 seconds to the nearest
tenth of a second.
s
Ye
Is the hundredths
digit less than 5?
The original
number
Look at the
hundredths digit
Keep the digit
the same
No
Round up
Jennifer's time, rounded to the nearest tenth of a second, was
___________ seconds.
November 01, 2011
Round the following numbers to the nearest tenth.
To help you, use the flow chart provided.
7.92 _____
432.65 _____
498.09 _____
13.43 _____
98.96 _____
100.84 _____
54.78 _____
0.46 _____
0.79 _____
s
Ye
The original
number
Is the hundredths
digit less than 5?
Look at the
hundredths digit
Keep the tenths
digit the same
No
Round up
November 01, 2011
Melissa was competing in the hurdles race. Her
time for the race was 92.228 seconds. Round
Melissa's time to the nearest hundredth.
How to round to the nearest hundredth:
s
Ye
92.228
92.228
The original
number
Look at the
thousandths digit
Is the thousandths
digit less than 5?
No
x
Keep the digit the
same
92.23
Round up
Melissa's time, rounded to the nearest hundreths of a second,
was 92.23 seconds.
November 01, 2011
Melissa ran another race. Her time for this race was
123.681 seconds. Round 123.681 seconds to the nearest
hundredth of a second.
s
Ye
Is the thousandths
digit less than 5?
The original
number
Look at the
thousandths digit
Keep the digit the
same
No
Round up
Melissa's time, rounded to the nearest hundreths of a second,
was _______ seconds.
November 01, 2011
Round the following numbers to the nearest hundredth.
To help you, use the flow chart provided.
7.891 _______
432.653 _______
998.099 _______
14.222 _______
78.966 _______
1250.845 _______
54.785 _______
0.466 _______
0.893 _______
s
Ye
Is the thousandths
digit less than 5?
The original
number
Look at the
thousandths digit
Keep the hundredths
digit the same
No
Round up
November 01, 2011
Questions??
November 01, 2011