Scientific Notation Quiz

Why is scientific notation used in mathematics and physics?

• To avoid using decimals

• To confuse students

• To save space and time when writing large or small numbers

• To make numbers look more complex

What is the scientific notation for the mass of the moon?

• 7 x 10^22 kg

• 7 x 10^20 kg

• 7 x 10^24 kg

• 7 x 10^18 kg

How is the leading digit determined in scientific notation?

• It is always zero

• It is the last digit

• It is the first non-zero digit

• It is the largest digit

What happens to the exponent when the decimal point is moved to the left?

• The exponent remains unchanged

• The exponent becomes positive

• The exponent becomes zero

• The exponent becomes negative

What is the scientific notation for 0.00021 kg?

• 2.1 x 10^-3 kg

• 2.1 x 10^-5 kg

• 2.1 x 10^-4 kg

• 2.1 x 10^-6 kg

Which of the following is NOT a rule of scientific notation?

• The exponent is negative if the decimal is moved right

• The exponent is positive if the decimal is moved left

• The decimal point can be moved in any direction

• The leading digit must be non-zero

How do you convert 5.87 x 10^4 to decimal form?

• 587

• 5870

• 58700

• 587000

What is the decimal form of 2.1 x 10^-2?

• 0.021

• 21

• 0.21

• 2.1

When converting scientific notation to decimal, what should be done with empty spaces?

• Fill them with ones

• Ignore them

• Leave them blank

• Fill them with zeros

What is the first step in converting scientific notation to decimal form?

• Move the decimal point to the right

• Add zeros to the number

• Look at the exponent

• Multiply the number by 10