1. Applying Multiplication and Division
Scientific Notation
Applying Multiplication and Division

2. Find the product. Write your answer in Scientific Notation
(2.3 𝑥 )(4 𝑥 )

3. Find the product. Write your answer in Scientific Notation
ANSWER: x 1010

4. Write the quotient in Scientific Notation
(8.8 𝑥 ) (2 𝑥 )

5. ANSWER: 4.4 x 105

6. Find the sum. Give your answer in Scientific Notation
7.5 𝑥 (6.32 𝑥 )

7. ANSWER: x 106

8. Find the difference. Give your answer in Scientific Notation
7.68 𝑥 −(3.21𝑥 )

9. ANSWER: x 1035

10. Find the quotient. Give your answer in Scientific Notation
(3 𝑥 10 −9 ) (5 𝑥 10 −4 )

11. ANSWER: 6 x 10-6

12. Write an expression to represent the problem
Write an expression to represent the problem. Then simplify your expression.
The mass of an electron is approximately 9.1 𝑥 10 −31 kilograms. What is the approximate mass of 2,000 electrons? Give your answer in scientific notation.
1. Write an expression then
2. Simplify the expression

13. ANSWER (2 x 103)(9.1 x 10-31) 1.82 x 10-27 kilograms

14. Write an expression to represent the problem
Write an expression to represent the problem. Then simplify your expression.
The wavelength of an orange light wave is approximately 6.2 𝑥 10 −7 meters. The wavelength of a green light is approximately 2 𝑥 10 −10 meters. How many times greater is the wavelength of the orange light than the wavelength of the green light?

15. ANSWER: (6.2 x 10-7)/(2 x 10-10) 3.1 x 103 times greater Or about 3000

16. The wavelength of an orange light wave is approximately 6
The wavelength of an orange light wave is approximately 6.2 x 10-7 meters. The wavelength of a blue light is approximately 2.1x10-7 meters. How much longer is the blue wave length than the orange wave length?

17. ANSWER: (6.2 x 10-7) – (2.1 x 10-7) 4.1 x 10-7 meters longer

18. Write an expression to represent the problem
Write an expression to represent the problem. Then simplify your expression.
The speed of sound is approximately 3 𝑥 meters per second. How far does sound travel in 4.5 𝑥 seconds?

19. ANSWER (3 x 108)(4.5 x 103) 1.35 x 1012 meters

20. Write an expression to represent the problem
Write an expression to represent the problem. Then simplify your expression.
The speed of sound is approximately 3 𝑥 meters per second. How long does it take sound to travel 6,000 meters ?

21. ANSWER: (6 x 103) / (3 x 108) 2 x 10-5 seconds