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100

Is the following expression written in scientific notation? If not, explain why. 3.25+10-7

No, 3.25 should be multiplied by 10-7

100
Solve the expression (4*10-5)*(5*1012)
2*108
100

Solve the expression (5.3 x 106)/(4.2 x 104)

1.26 x 102

200

The size of the Sahara desert is about 3.629 x 106 square miles and the Arabian desert is about 9 x 105 square miles. Which desert is larger? Explain how you know.

What is Sahara, because it has a larger exponent?

200
Solve (6*103)*(2*105)
1.2*109
200

Solve (9 x 108)/(2 x 102)

4.5 x 106

300

The size of four oceans in square km is shown below. List the oceans from smallest to largest. Pacific Ocean: 1.796*108, Artic Ocean: 1.323*107, Atlantic Ocean: 1.061*108, Indian Ocean: 7.498*107

Artic, Indian, Atlantic, Pacific

300
Solve (5.1*104)*(2.5*103)
1.275*108
300

Solve (3.66 x 10-5)/(2.0 x 10-3)

1.83 x 10-2

400

Write this number in scientific notation 93,000,000

What is 9.3 x 107 ?

400

(1.25 x 104)(4 x 104)

5 x 108 

400

(4.5 x 1028)/(3 x 1015)

1.5 x 1013 

500

Write this number in scientific notation 0.000000302

What is 3.2 x 10-7 ?

500

Light travels at a speed of 1.86 x 105 miles per second. It takes light from the Sun about 4.8 x 103 seconds to reach Saturn. Find the approximate distance from the Sun to Saturn. 

8.928 x 108

500

When the Sun makes an orbit around the center of the Milky Way, it travels 2.025 x 104 kilometers. The orbit takes 225 million years. At what rate does the Sun travel?

9 x 105 km/year