Algebra U2 L5 Scientific Notation

What is the coefficient in the scientific notation expression 3.2 × 10^4?

• 3.2

• 10

• 4

• 32,000

Tags

CCSS.8.EE.A.3

In the scientific notation 3.2 × 10^4, what does the exponent represent?

• The number of times the base (10) is multiplied by itself

• The coefficient

• The standard form

• The significant digits

Tags

CCSS.8.EE.A.3

What is the standard form of 3.2 × 10^4?

• 32,000

• 3.2

• 10,000

• 320

Tags

CCSS.8.EE.A.3

How are significant digits defined in scientific notation?

• Digits that carry meaningful information about precision

• Digits that are always zero

• Digits that are not part of the coefficient

• Digits that are only in the exponent

Tags

CCSS.8.EE.A.4

What must be done to add or subtract numbers in scientific notation?

• Convert them to the same power of ten

• Multiply the coefficients

• Subtract the exponents

• Divide the coefficients

Tags

CCSS.8.EE.A.4

How do you multiply numbers in scientific notation?

• Multiply the coefficients and add the exponents

• Add the coefficients and multiply the exponents

• Subtract the coefficients and add the exponents

• Divide the coefficients and subtract the exponents

Tags

CCSS.8.EE.A.4

What is the result of dividing (3.2 × 10^4) by (4.5 × 10^3) in scientific notation?

• 0.711 × 10^1

• 1.42 × 10^7

• 7.11 × 10^0

• 3.2 × 10^1

Tags

CCSS.8.EE.A.4

Why is scientific notation useful in fields such as science and engineering?

• It allows for easier multiplication and division of large or small quantities

• It makes numbers look more complex

• It is only used for very small numbers

• It eliminates the need for significant digits

Tags

CCSS.8.EE.A.3

Write the number 0.00032 in scientific notation.

• (a) 3.2 × 10^-3

• (b) 3.2 × 10^-4

• (c) 3.2 × 10^-5

• (d) 3.2 × 10^-6

Write the number 7,890,000 in scientific notation.

• (a) 7.89 × 10^5

• (b) 7.89 × 10^6

• (c) 7.89 × 10^7

• (d) 7.89 × 10^8