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Concepts
Adding/Subtracting Decimals
Subtracting Decimals
Adding Negative and Positive Decimals
Mixed
100

How do I write my addition or subtraction of two decimals?

Line up the Decimals

100

4.56 - 5.89 =

-1.33

100
6.25 - 4.32 =
2.02
100
-23.32 + -24.01 =
-47.33
100
-12.34 - (-56.43) =
44.09
200

What do you do when adding or subtracting decimals with different signs?

Subtract the Decimals

200
2.81 + 1.45 =
4.26
200
89.32 - 76.50 =
12.82
200
-10.32 + -23.76 =
-34.08
200
-23.64 - (-34.32) =
10.68
300

How do you know when to subtract integers?

When one digit is positive and the other is negative.

300

15.6 - 4.9 =

10.7

300
23.564 - 21.397 =
2.167
300
-49.32 + 34.54 =
-14.78
300
-45.98 - 2.43 =
-48.41
400

How do you know when to add integers? Give an example

When they have the same sign.

400

3.14 - 6.39 =

-3.25

400
9.68 - 7.25 =
2.43
400
-1.56 + 56.45 =
54.89
400
3.23 - (-7.65) =
10.88
500

When adding two decimals with negative signs, you get what kind of answer?

Negative

500
4.94 + 7.87 =
12.81
500
32.298 - 14.652 =
17.646
500
45.54 - 9.54 =
36
500
45.54 - (-54.78) =
100.32