Refer to our Texas Go Math Grade 8 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 8 Module 2 Answer Key Scientific Notation.

## Texas Go Math Grade 8 Module 2 Answer Key Scientific Notation

**Essential Question**

How can you use scientific notation to solve real-world problems?

**Texas Go Math Grade 8 Module 2 Are You Ready? Answer Key**

**Complete these exercises to review skills you will need for this chapter.**

**Write each exponential expression as a simplified number.**

Question 1.

10^{2} _______

Answer:

10^{2} Given

10 * 10 = 100.00 Evaluate

Question 2.

10^{3} _______

Answer:

10^{3} Given

10 * 10 * 10 = 1,000.00 Evaluate

Question 3.

10^{5} _______

Answer:

10^{5} Given

10 * 10 * 10 * 10 * 10 = 100,000 Evaluate

Question 4.

10^{7} _______

Answer:

10^{7} Given

10 * 10 * 10 * 10 * 10 * 10 * 10 = 10,000,000.00 Evaluate

**Find each product or quotient.**

Question 5.

45.3 × 10^{3}

Answer:

45.3 * 10^{3} Identify the number of zeros in the power of 10

45.3 * 1,000 When multiplying, move the decimal point to the right the same number of places as the number of zeros

45,300

Question 6.

7.08 ÷ 10^{2}

Answer:

7.08 ÷ 10^{2} Identify the number of zeros in the power of 10

7.08 ÷ 100 When dividing, move the decimal point to the left the same number of places as the number of zeros.

0.0708

Question 7.

0.00235 × 10^{6}

Answer:

0.00235 × 10^{6} Identify the number of zeros in the power of 10

0.00235 × 1,000, 000 When multiplying, move the decimal point to the right the same number of places as the number of zeros

2,350

Question 8.

3,600 ÷ 10^{4}

Answer:

3600 ÷ 10^{4} Identify the number of zeros in the power of 10

3600 ÷ 10000 When dividing, move the decimal point to the left the same number of places as the number of zeros.

0.36

Question 9.

0.5 × 10^{2}

Answer:

0.5 × 10^{2} Identify the number of zeros in the power of 10

0.5 × 100 When multiplying, move the decimal point to the right the same number of places as the number of zeros

50

Question 10.

67.7 ÷ 10^{5}

Answer:

67.7 ÷ 10^{5} Identify the number of zeros in the power of 10

67.7 ÷ 100000 When dividing, move the decimal point to the left the same number of places as the number of zeros.

0.000677

Question 11.

0.0057 × 10^{4}

Answer:

0.0057 × 10^{4}

Identify the number of zeros in the power of 10

0.0057 × 10,000 When multiplying, move the decimal point to the right the same number of places as the number of zeros

57

Question 12.

195 ÷ 10^{6}

Answer:

195 ÷ 10^{6} Identify the number of zeros in the power of 10

195 ÷ 1000000 When dividing, move the decimal point to the left the same number of places as the number of zeros.

0.000195

**Texas Go Math Grade 8 Module 2 Reading Start-Up Answer Key**

**Visualize Vocabulary**

**Use the ✓ words to complete the Venn diagram. You can put more than one word in each section of the diagram.**

**Understand Vocabulary**

**Complete the sentences using the preview words.**

Question 1.

A number produced by raising a base to an exponent is a _______

Answer:

A number produced by raising a base to an exponent is a __power__.

Question 2.

____ is a method of writing very large or very small numbers by using powers of 10.

Answer:

__Scientific notation__ is a method of writing very large or very small numbers by using powers of 10.

Question 3.

A ____ is any number that can be expressed as a ratio of two integers.

Answer:

A __rational number__ is any number that can be expressed as a ratio of two integers.