Math in Focus Grade 8 Chapter 2 Answer Key Scientific Notation

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 • 10³
Answer: 280

Explanation:
Here the • indicates the product.
Here the decimal point moves to the right because we are multiplying the decimal number with 10³.
-0.28 is multiplied by 10³ gives 280.

Question 3.
1.3 • 10⁴
Answer: 13000

Explanation:
Here the • indicates the product.
Here the decimal point moves to the right because we are multiplying the decimal number with 10⁴.
1.3 is multiplied by 10⁴ 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 ÷ 10²
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 10².
2.81 is divided by 10² gives the result 0.0281.