Scientific Notation

What is the scientific notation for 0.00012?

• 1.2 × 10^-4

• 1.2 × 10^-3

• 1.2 × 10^-5

• 1.2 × 10^-2

Tags

CCSS.8.EE.A.3

How do you divide numbers in scientific notation?

• Multiply the coefficients and add the exponents.

• Divide the coefficients and subtract the exponents.

• Add the coefficients and divide the exponents.

• Subtract the coefficients and add the exponents.

Tags

CCSS.8.EE.A.4

Convert 0.00027 to scientific notation.

• 2.7 × 10^-3

• 2.7 × 10^-4

• 2.7 × 10^-5

• 2.7 × 10^-2

How do you multiply numbers in scientific notation?

• Multiply the coefficients and add the exponents.

• Add the coefficients and multiply the exponents.

• Multiply the coefficients and subtract the exponents.

• Add the coefficients and add the exponents.

Tags

CCSS.8.EE.A.4

What is the scientific notation for 0.000005?

• 5 × 10^-5

• 5 × 10^-6

• 5 × 10^-7

• 5 × 10^-8

Tags

CCSS.8.EE.A.3

How do you convert a small number to scientific notation?

• 1. Move the decimal point to the right until only one non-zero digit remains on the left. Count the number of places you moved the decimal point; this becomes a negative exponent (n) in 10^n. Write the number as a × 10^n.

• 2. Move the decimal point to the left until only one non-zero digit remains on the right. Count the number of places you moved the decimal point; this becomes a positive exponent (n) in 10^n. Write the number as a × 10^n.

• 3. Move the decimal point to the right until only one non-zero digit remains on the left. Count the number of places you moved the decimal point; this becomes a positive exponent (n) in 10^n. Write the number as a × 10^n.

• 4. Move the decimal point to the left until only one non-zero digit remains on the right. Count the number of places you moved the decimal point; this becomes a negative exponent (n) in 10^n. Write the number as a × 10^n.

What is the scientific notation for 250,000?

• 2.5 × 10^5

• 2.5 × 10^4

• 25 × 10^4

• 250 × 10^3

Tags

CCSS.8.EE.A.3

What is the scientific notation for 1,000,000?

• 1 × 10^5

• 1 × 10^6

• 1 × 10^7

• 1 × 10^8

Tags

CCSS.8.EE.A.3

How do you add numbers in scientific notation?

• Make sure the exponents are the same, then add the coefficients. For example, (2 × 10^3) + (3 × 10^3) = (2 + 3) × 10^3 = 5 × 10^3.

• Add the coefficients directly without considering the exponents.

• Multiply the coefficients and add the exponents.

• Convert the numbers to decimal form before adding them.

Tags

CCSS.8.EE.A.4

What is the significance of the exponent in scientific notation?

• The exponent indicates how many places the decimal point has been moved. A positive exponent means the number is large, while a negative exponent means the number is small.

• The exponent determines the base of the number in scientific notation.

• The exponent is used to calculate the square root of the number.

• The exponent indicates the number of significant figures in the number.

Tags

CCSS.8.EE.A.3