Operations with Decimals

Random

200

The World Cup has been held every four years since 1930. Which country has made the most overall appearances in the tournament, and how many times have they participated?

Brazil (22 times)

400

There are about 8 billion humans on Earth. About how many Elephants are left in the world?

415,000

600

What was the year that Pokémon was introduced to the public? 

1996 (February 27th) 

800

The Earth's circumference is 24,901 miles. Estimate the Sun's circumference.

2,700,000 

1000

Le'Bron James holds the record for the most total (regular season and playoffs) games played in the history of the NBA. Hint: He started playing when he was 18 and turned 40 during this season.

1,854 total games (292 playoffs games)

Multiplying/Dividing by Base 10

200

12.1 x 100

1,210

400

95.63 x 1000 =

95,630

600

52.1 ÷ 100 =

.521

800

3,201.3 ÷ 10⁴

.32013

1000

.01 x 5.42 x 10³ x 2 =

108.4

Adding Decimals

200

Add these decimals: 21.74 + 8.26

30

400

Add these decimals: 5.2 + 3.11

8.31

600

Add these decimals: 6.125 + 18.4729

24.5979

800

Add these decimals: .32 + 17.1 + 9.54 +

26.96

1000

Add these decimals: 4.67 + 29.1 + 5.33

39.1

Multiplying Decimals

200

Multiply these decimals: 0.2 x 7

1.4

400

Multiply 4.4 x 5.3 =

23.32

600

Multiply these decimals: 0.8 x 0.3

0.24

800

Multiply these decimals.  12.7 x 26 x .5 =

165.1

1000

Multiply these decimals. 0.25 x 0.7 x 4.16

.728

Subtracting Decimals

200

Subtract these decimals: 851.701 - 312.49

539.211

400

Subtract these decimals: 10.71 - 0.7

10.01

600

Subtract these decimals: 547.612 - 3.107

544.505

800

Subtract these decimals: 9.034 - 0.095

8.939

1000

Subtract these decimals: 1.72 - 0.8

0.92

DividingDecimals

200

Divide these decimals: 0.27 ÷ .03 

9

400

Divide these decimals: 60.5 ÷ 5

12.1

600

Divide these decimals: 1.26 ÷ 0.3

4.2

800

Divide these decimals: 2.12 ÷ 0.05 ÷ .1

42.4

1000

Divide these decimals: 4.16 ÷  1.6 ÷ .5

5.2