MINI Packet #2
Rounding to the tenths place
Student:
Teacher:
Where is the tenths place?
The tenths place is one place after the decimal.
TENTHS
4.16
decimal
Any number written to the tenths place
has only one number after the decimal!
Examples:
1.3
4.0
12.7
109.5
Only one number
after the decimal
Practice (Part I)
Circle all of the numbers that are written to the tenths place.
3.8
4.16
10.7
19.81
7.5
463.9
0.453
10.333…
8.0
0.3
297
1.2626…
6.9
8.25
33.45
15.10
388.2
109.7
How do we round to the nearest tenth?
Look at the number behind the tenths place.
If the number behind
the tenths place is small,
then the tenths place
stays the same.
6.20
These all round to
6.21
6.2
6.22
because the number behind the
tenths place is smaller than 5.
6.23
6.24
Examples:
13 . 8 3
rounds to 1 3 . 8
9 . 1 4 7 rounds to
Only look at the
number behind the
tenths place
9.1
If the number behind
the tenths place is
large, then the tenths
place rounds up by one.
6.25
These all round up to
6.26
6.3
6.27
because the number behind
the tenths place is 5 or larger.
6.28
6.29
Examples:
13 . 8 7
rounds to 1 3 . 9
9 . 1 9 2 rounds to
Only look at the
number behind the
tenths place
9.2
Practice (Part II)
Round each decimal to the nearest tenth.
1.
5.62 rounds to
____________
2.
3.49 rounds to
____________
3.
10.18 rounds to
____________
4.
12.23 rounds to
____________
5.
19.116 rounds to ____________
6.
751.07 rounds to ____________
Which decimals are rounded correctly to the nearest tenth? For the decimals that
are not correct, write the correct answer in the blank.
7.
12.85 rounds to 12.9
… Correct
… Not correct: ___________
8.
561.17 rounds to 561.1
… Correct
… Not correct: ___________
9.
0.79 rounds to 1.8
… Correct
… Not correct: ___________
How can we use the calculator to help us round?
Example
7
Use your calculator to round 8 to the nearest tenth.
7
÷
8
ENTER
The answer as a decimal is 0.875 .
Press
To round to the tenths:
Select 1 so the calculator will round to 1 decimal place.
Then press
CLEAR
ENTER
The answer is .9
Practice (Part III)
Use your calculator to round each decimal to the nearest tenth.
10. 235.871 rounds to ____________
11.
16.04 rounds to ____________
12. 98.98 rounds to
____________
13.
10.118 rounds to ____________
14. 85.2229 rounds to ____________
15.
67.813 rounds to ____________