Adding and Subtracting Decimals Review

True/False

100

When adding and subtracting decimals, you always include the decimals.

True

200

When adding and subtracting decimals, you always put the longer number on top.

False

300

When adding and subtracting decimals, you ignore the decimal points.

False

400

When adding and subtracting decimals you put the bigger number on top.

True

500

When adding and subtracting decimals, you count how many numbers are behind the decimals in the problem and put that in your answer.

False! 

Adding Decimals

100

3.1 + 5.1 = 

What is 8.2?

200

14.7+15.1=

What is 29.8?

300

3 + 4.5=

What is 7.5?

400

17.82 + 3.66=

What is 21.48?

500

11.7 + 2.81=

What is 14.51?

Subtracting Decimals

100

20.8 - 7.3=

What is 13.5?

200

34.6 - 27.9=

What is 6.7?

300

15.2- 0.4=

What is 14.8?

400

6 - 2.3=

What is 3.7?

500

1124.9 - 567.80=

What is 557.1?

Adding On

100

12.4 - 3.8=

YOU MUST ADD ON :)

8.6

200

4.5 - 3.7=

YOU MUST ADD ON :)

0.8

300

79.38 - 9.19=

YOU MUST ADD ON :)

What is 70.19?

400

12.1 - 0.9=

YOU MUST ADD ON :)

What is 11.2?

500

10.21 - 5.6=

YOU MUST ADD ON :)

What is 4.61?

Use a Different Strategy

100

5.10-3.56

1.56

200

3.45+9.6

13.05

300

9.00-4.50

4.50

400

36.456+3.285

39.741

500

95.2-68.67

26.53