Math 6 Unit 02 Notes - Decimals Worksheet Page 11
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19Math 6 Unit 02 Notes – Decimals
Algorithm for Addition / Subtraction of Decimals
1. Rewrite the problems vertically, lining up the decimal points.
2. Fill in spaces with zeros.
3. Add or subtract the numbers.
4. Bring the decimal point straight down.
+ +
Example:
1.23 .4 12.375
1.23
Rewrite vertically lining up the
decimal points.
.4
+
12.375
Fill in zeros where necessary so that
all three numbers have the same
1.23
0
decimal place value..
.4
00
+
12.375
14
.00
5
Subtraction using the base 10 blocks could be modeled as follows in the next example.
1.21 − .54 =
1.21
.54
.67
Math 6 NOTES
Unit 02: Decimals
Page 11 of 19
2014-15 -NVACS
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