Swun Unit 1

Add /Subtract Decimals

100

10.2 + 9.8

20

200

43.64 + 126.3

169.94

300

45.2 + 5.09 + 83.103 

133.303

400

ESTIMATE then evaluate the expression - 2 answers

16.2  - 9.6  = 

1 answer should be the estimated answer then the actual answer

16 - 10  = 6

and 

6.6 

500

ESTIMATE then evaluate the expression - 2 answers

45.2 - 5.09 - 3.013 = 

1 answer should be the estimated answer then the actual answer

45 - 5 - 3 = 37 

and 37.097

Multiply decimals / Long Division

100

4.5 x 1.4 

6.3

200

38.1 x 8.7 

331.47

300

On Tuesday, gas cost $4.10 per gallon. Clint bought 21.2 gallons. How much did he pay for the gas?  

86.92

400

6244 divided by 28 

6244 /28

223 

500

2275 divided by 25

2275 / 25

91

Dividing with Decimals

100

55.6 divided by 4 

55.6/4

13. 9

200

48.64 divided by 19

48.64 / 19

2.56

300

42.5 divided by 0.5

42.5 / 0.5

21.25

400

89.2 divided by 0.7

89.2 / 0.7

62.44

500

24.75 divided by 0.32

24.75 / 0.32

7.92

Greatest / Least Common Factor

100

Find the GCF of 15 and 25 

5

200

Find the GCF of 60 and 45

15

300

Find the LCM of 21 and 35

105

400

Find the LCM of 24 and 36 

72

500

Find the LCM of these three numbers: 

7 , 14 , and 21 

42 

Divide Fractions by Fractions

100

Rewrite this fraction as a decimal

1/2

0.5

200

Rewrite this fraction as a decimal

3   3/4

15/4   = 3.75 

300

3/5  divided by 2/ 9 

2   7/10

400

5/12 divided by 5/6

3/4

500

Mr. Veu is cutting hair bows out of ribbon. Each hairbow takes a 2 and 3/4 footlong strip of ribbon. How many can be cut from a ribbon that is 5 and 1/2 feet long? 

2