Number Sense
I can ___________________
add two or more
(Adding Decimals)
decimals to determine the sum.
_______________________
How do I add decimals?
Step 1:
Line up your decimals. Fill
in any blank spots to the
right of a decimal with “0”.
Step 2:
Add from right to left,
column by column. If sum
is 10 or greater, then you
need to “carry a 1”.
45.879
+ 5.480
51359
Step 3:
Place the decimal point
in line with the other
decimals.
45.879
+ 5.480
51 . 359
45.879 + 5.48
45.879
+ 5.480
1 1 1
Examples:
137.92 + 9.86
1 1
137.92
+ 9.86
147.78
147.78
23 + 4.09 + 1.1
23.00
4.09
+ 1.10
28.19
28.19
©2017 Math in Demand
Number Sense
(Adding Decimals)
On a rating of 1-5, how comfortable
are you with this concept?
(5 is the highest)
1
1.) 45.35 + 12.786
1
1
45.350
+ 12.786
58.136
Answer
2.)
2
4
5
0.47 + 8.1
0.47
+ 8.10
8.57
58.136
3.) 0.98 + 0.005
3
Answer
8.57
4.) 13.5 + 2.1 + 5.06
1
0.980
+ 0.005
0.985
Answer
0.985
13.50
2.1 0
+ 5.06
20.66
Answer
20.66
Reflection: I learned…
©2017 Math in Demand