Entering Decimals Worksheet - Grade 7 Page 10
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415) 3.49
3.489
3.4899
3.48999
3.48989
NOTES
Adding and Subtracting Decimal Numbers
When adding and subtracting decimal numbers, line up the decimal point of
all the numbers. If a number does not show a decimal point, place one to the
right of the whole number. You may add zeroes to keep the columns lined up.
Add a zero
13
.
60
+
Add 13.6 and 42.18
42
.
18
55
.
78
Add zeroes
1347
.
0000
+
Add 1347 and .0005
.
0005
1347
.
0005
113
.
06
The wording here can be
Subtract 14.69 from 113.06
confusing. Notice how
14
.
69
-
“subtract 14.69 from 113.06”
98
.
37
means 113.06 – 14.69
Add zeroes
146
.
000
146 – 3.198
-
. 3
198
142
.
802
Decimals Worksheets
Revised @2009 MLC Page 9 of 21
10
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