Fractions as Decimals
Decimals as Fractions in Simplest Form
Adding and Subtracting Decimals
Multiplying and Dividing Decimals
Random Decimal Cookin'
100

12/25

0.48

100

0.4

2/5

100

1.4 + 2.07

3.47

100

0.3 * 7

2.1

100

How many tenths are there in 4.5?

45

200

12/50

0.24

200

0.26

13/50

200

0.043 + 1.09

1.133

200

0.2*0.3

0.06

200

If Claire has 0.8 stamps and Avery has 0.05 stamps, how many more stamps than Avery does Claire have?

Claire has 0.75 more stamps.

300

12/5

2.4

300

1.48

1 12/25

300

15.09 - 12.8

2.29

300

4.8/8

0.6

300

Ilana takes out 13 hundredth discs from the bag. Mira Moukaddem then takes out 17 tenth discs from the bag. What is the value of both of their discs when combined? 

1.83

400

23/1000

0.023

400

0.004

1/250

400

0.4 - 0.056

0.344

400

2.32/0.04

58

400

Joyce multiplied 0.4 and 0.2 and got 0.08. Holly multiplied o.4 and 0.2 and got 0.8. Who is right? Why?

Joyce is right because o.4 x 0.2 means "two tenths of 4 tenths. There is no way 2 tenths of 4 tenths would result in double the amount of tenths (0.8)!

500

12.5/100

0.125

500

0.1002

501/5000

500

8.597 + 9.007 - 16.7

0.904

500

(0.8)^3

0.512

500

If

2*10^-1=0.2

Then what does 

3*10^-3=?

0.003