Half a Problem
Powerful Operators
To the Power of Infinity!
Science-y Calculations
Notes on Science
100

Nina and Margaret are having a pizza eating contest. Nina eats 5 ⅓ pizzas, and Margaret eats 5 ¼ pizzas. How much pizza do they eat together?

10 7/12 pizzas

100

73 x 72 =

75

100

72 =

49

100

2 x 105 x 3 x 103

6 x 108

100

Write without scientific notation:

6 x 105

600 000

200

Lars walks 2 ⅔ km to school, Karin walks 2 11/18 km to school. Who walks farther, and by how much?

Lars by 1/18

200

12^2/12^4

12-2

200

2-3 =

1/8

200

(8xx10^9)/(4xx10^5)

2 x 104

200

Write in scientific notation:

4 300 000

4,3 x 106

300

Anna writes 2 ½ pages on her English assessment. Brittany writes ¾ as much. How many pages does Brittany write?

1 ⅞ pages.

300

4^3/4^-6

49

300

33 x 70 =

27

300

6 x 10x 7 x 10-2

4,2 x 102

300

Write without scientific notation:

4,23 x 10-5

0,000 0423

400

Charlie, David, Estrid, and Frans are doing a job. Charlie does ⅓ of it, David does ⅛ of it, and Estrid does ½ of it. How much does Frans do?

1/24

400

(8^2 xx 8^-3) /8^7

8-8

400

34 - 33 = 

54

400

(4xx10^-2)/(8xx10^-3)

5

400

Write in scientific notation:

70 million

7 x 107

500

In a class of 35 students 5/7 take the bus to school. 3/5 of those who take the bus are from out of town. 60% of those who take the bus from out of town are girls. How many girls in the class take the bus from out of town?

9

500

(5^3 xx 5^x)/(5^-2)=1

x = -5

500

4^3 / 2^3 - 3xx(-3)^-2

7 ⅔  

500

One study found that the weight of one bacterium was about 9 x 10-13 g. An African Forest Elephant weighs about 2,7 x 103 kg. How many bacteria does it take to weigh the same as an elephant?

3 x 1018 bacteria

500

Write in scientific notation:

250 millionths

2,5 x 10-4

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