Scientific Notation and Operations

Scientific Notation and Operations

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial addresses the 19th problem in an ACT practice test, focusing on scientific notation. It presents two methods to solve the problem: adding the numbers first and then converting the sum to scientific notation, or converting each number to scientific notation first and then adding them. Both methods lead to the same result, demonstrating the flexibility in approaching such problems. The tutorial emphasizes the correct placement of the decimal in scientific notation and how to adjust the exponent accordingly.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main mathematical concept discussed in this problem?

Probability

Geometry

Scientific notation

Algebraic equations

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in the initial method to solve the problem?

Add the numbers together

Multiply the numbers

Convert each number to scientific notation

Subtract the numbers

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many times do you move the decimal to convert 1,370,000,000 to scientific notation?

10 times

7 times

8 times

9 times

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the scientific notation of 670 million?

67 x 10^7

6.7 x 10^8

6.7 x 10^7

67 x 10^8

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the scientific notation of 700 million?

70 x 10^7

70 x 10^8

7.0 x 10^8

7.0 x 10^7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of adding 6.7 x 10^8 and 7.0 x 10^8?

13.7 x 10^8

13.7 x 10^9

1.37 x 10^9

1.37 x 10^8

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After adjusting the decimal in 13.7 x 10^8, what is the final scientific notation?

13.7 x 10^9

1.37 x 10^8

1.37 x 10^9

137 x 10^8

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