True/False
Adding Decimals
Subtracting Decimals
Adding and Subtracting Decimals
Place Value
100
When adding and subtracting decimals, you always include the decimals.

True

100

3.14 + 5.12 = 

8.26

100

20.8 - 7.34=

13.46

100

12.46 + 3.8=

16.26

100

What number is in the hundredth place


45.67

7

200

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

False

200

14.73+15.1=

29.83

200

34.63 - 27.9=

6.73

200

4.5 - 3.79=

0.71

200

What number is in the ones place value?

23.09

3

300

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

False

300

3 + 4.55=

7.55

300

Subtract 5.83 from 8.32

2.49

300

9.38 - 0.19=

9.19

300

What number is in the tenth place?


9.12

1

400

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

False. 

Adding decimals it does not matter which number is on top.

Subtracting decimals, you want to put the left number on top. 

400

17.82 + 3.66=

21.48

400

6 - 2.33=

3.67

400

2.13 + 0.9=

3.03

400

What number is in the tens place?


76.9

7

500

When adding and subtracting decimals, which skill allows you to check whether your answer is reasonable?

Estimating! 


1/2 credit if you said rounding b/c it is the first step in estimating!

500

11.7 + 2.81=

14.51

500

32 - .058 = 

31.942


500

10.21 - 5.6=

4.61

500

When you read a number with a decimal, what do you say when you see the decimal?

AND

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