Unit 4- Add and Subtract Decimals

Rounding Decimals

100

What does 4.3 round to as a whole number?

4

200

What does 15.6 round to as a whole number?

16

300

What does 27.5 round to as a whole number?

28

400

What does 9.86 round to?

10

500

What does 124.45 round to as a whole number?

124

Adding Decimals Beginning

100

0.7 + 0.1= ?

0.8

200

0.02 + 0.09= ?

0.11

300

0.5 + 0.8 =?

1.3

400

0.78 + 0.64=?

1.42

500

0.46 + 0.29 = ?

0.75

Adding Decimals (tenths and hundredths)

100

0.7 + 0.68 =?

1.38

200

0.6 +0.59=?

1.19

300

0.9 + 0.02= ?

0.92

400

0.86 + 0.5 =?

1.36

500

Adrian jumped 0.25 meters down a sidewalk. He jumped again and went an additional 0.3 meters. What is the total distance Adrian jumped?

0.25+0.3=0.55

Subtracting Decimals

100

0.7- 0.1=

0.6

200

0.09-0.02=?

0.07

300

0.54-0.38= 

0.16

400

1.28-0.7=

0.58

500

1.74-0.8=

0.94

Random Add & Subtract Decimals

100

2.19+ 3.8=

5.99

200

Round 43.2 to a whole number

43

300

1.35+ 0.45=

1.8

400

1.3-0.8=

0.5

500

13.25+ 9.5=

22.75