Go through the Math in Focus Grade 8 Workbook Answer Key Chapter 2 Scientific Notation to finish your assignments.

## Math in Focus Grade 8 Course 3 A Chapter 2 Answer Key Scientific Notation

### Math in Focus Grade 8 Chapter 2 Quick Check Answer Key

**Evaluate.**

Question 1.

1.8 • 100

Answer: 180

Explanation:

Here the • indicates the product.

Here the decimal point moves to the right because we are multiplying the decimal number with the whole number 100.

when 1.8 is multiplied by 100 then we get 180.

Question 2.

-0.28 • 10^{3}

Answer: 280

Explanation:

Here the • indicates the product.

Here the decimal point moves to the right because we are multiplying the decimal number with 10^{3}.

-0.28 is multiplied by 10³ gives 280.

Question 3.

1.3 • 10^{4}

Answer: 13000

Explanation:

Here the • indicates the product.

Here the decimal point moves to the right because we are multiplying the decimal number with 10^{4}.

1.3 is multiplied by 10^{4 }gives the result 13000.

Question 4.

74.5 ÷ 1,000

Answer: 0.0745

Explanation:

Here the ÷ indicates the division.

Here the decimal point moves to the left because we are dividing the decimal number by 1000.

74.5 is divided by 1000 gives the result 0.0745.

Question 5.

-3.8 ÷ 10

Answer: 0.38

Explanation:

Here the ÷ indicates the division.

Here the decimal point moves to the left because we are dividing the decimal number by 10.

-3.8 is divided by 10 gives the result -0.38.

Question 6.

2.81 ÷ 10^{2}

Answer: 0.0281

Explanation:

Here the ÷ indicates the division.

Here the decimal point moves to the left because we are dividing the decimal number by 10^{2}.

2.81 is divided by 10^{2} gives the result 0.0281.