True/False
When adding and subtracting decimals, you always include the decimals.
True
26.43 + 7.19
33.62
1.23-1.11=
0.12
3.89+1.12
5.01
What is the last step in adding and subtracting decimals?
Slide the decimal point straight down.
When adding and subtracting decimals, you always put the longer number on top.
False
8.09 + 6.5
14.59
5.23-0.1=
5.13
1.19 - 0.79
0.4
What is Mrs. Lech's favorite candy?
Peanut m&m's
When adding and subtracting decimals, you ignore the decimal points.
False
0.79 +0.45
1.24
27.81-5.62
22.19
9.4 +3.23
12.63
What is Mrs. Lech's favorite color?
Blue
When subtracting decimals you put the bigger number on top.
True
17.82 + 3.66=
21.48
8.61 -7.25
1.36
4.44 -2.99
1.45
Should you line up the decimals when adding and subtracting?
Yes!
When adding and subtracting decimals, you count how many numbers are behind the decimals in the problem and put that in your answer.
False! That's for multiplying!
111.7 + 102.81=
214.51
105.65-62.33=
43.32
6.290+8.980
15.27
What year was Mrs. Lech born?
1988