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Math is practice.
100

1.01 - 0.01 =

1.00

100

09.207 - 9.207 =

0

100

200 - 200.1 =

- 0.1

100

38.9 - 4.9 =

34.0

100

1.03 - 1 =

0.03

200

3/4 = (in decimals)

0.75

200

(2.90)/100 = (in decimals)

0.029

200

900/3 = 

300

200

30.4/10 = (in decimals)

3.04

200

1/5 = (in decimals)

0.2

300

7% = (as a fraction and as decimal)

7/100 and 0.07

300

12.4% = (as a fraction and as a decimal)

12.4/100 or 1.24/10 or 31/250 and 0.124 

300

2 out of 9 students in this class don't enjoy sushi. 

How many students AS A PERCENTAGE don't enjoy sushi? (include decimal values).

22.2%

300

8 out of 23 people will not come to our expedition...

How many people AS A PERCENTAGE will not come to the expedition? (include decimal values).

34.8%

300

0.56 = (as a fraction and as a percentage)

56/100 or 5.6/10 or 14/25 and 56%

400

Joana has to give me 15% of all her farm-grown corns. 

She has 15,000 farm-grown corns, how many will she give me?

2250 farm-grown corns.

400

Melony got 67% increase on her salary, she salary is $5,000.

How much will she receive from now on?

$8,350

400

1% of 0.01 =

0.0001

400

120% of 400 =

480

400

A farmer has 250 apples. He sells 34% of them. 

How many apples does he have left?

165 apples.

500

(4%)2 = (in percentage)

0.16%

500

570/0.01 = (as a whole number)

57000

500

70/0.2 = (as a whole number)

350

500

(1%)³ = (as a percentage)

0.0001%

500

(3/50)³ = (as a percentage)

0.0216%