Decimals in Algebra

Adding Decimals

100

What is 

3.5+2.4?

5.9

200

What is 50.7+0.26?

50.96

300

What is 2.57+7.706?

10.276

400

If x=.078, what is 17.23+ x?

17.308

500

x+5.43=9.28, solve for x

x=3.85

Subtracting decimals

100

What is 46.91-28.7?

18.21

200

What is 9.501-9.45?

0.051

300

What is 15-6.108?

8.892

400

If x=2.9, what is 19.9-x?

17.0

500

x-6.2=2.9, solve for x

x=9.1

Multiplying decimals

100

What is 2.3(3)?

6.9

200

What is 17.2(.35)?

6.020 or 6.02

300

What is 47(0.003)?

0.141

400

if x=14, what 3.5x?

x=49

500

1.8x=40.14

x=22.3

dividing decimals

100

What is 10.5/2?

5.25

200

What is 7/0.5?

14

300

What is 0.64/0.008?

80

400

if x=5, what is x/4?

1.25

500

x/2.5=40, solve for x

x=100

Equations with decimals

100

48.55+x=61.77, solve for x

x=13.22

200

x-3.2=5.6, solve for x

x=8.8

300

1.6x=9.6, solve for x

x=6

400

x/3.54=1.5, solve for x

x=5.31

500

If x=6.1, what is 6x+(x/2)?

39.65