Adding and Subtracting in Scientific Notation

What is the first step in checking if a number is in scientific notation?

• Check if the number is negative

• Check if the coefficient is between 1 and 10

• Check if the number is a whole number

• Check if the exponent is positive

How do you convert 0.00345 to scientific notation?

• 3.45 x 10^3

• 3.45 x 10^-3

• 0.345 x 10^-2

• 34.5 x 10^-4

What happens to the exponent when you move the decimal point to the right?

• The exponent becomes negative

• The exponent remains the same

• The exponent decreases

• The exponent increases

When adding numbers in scientific notation, what must be true about the exponents?

• One must be positive and one must be negative

• They must be the same

• They must be zero

• They must be different

How do you handle different exponents when adding in scientific notation?

• Multiply the exponents

• Subtract the exponents

• Adjust one number to match the other's exponent

• Add the coefficients directly

What is the result of adding 2.4 x 10^3 and 7.1 x 10^4?

• 9.5 x 10^3

• 9.5 x 10^4

• 7.34 x 10^3

• 7.34 x 10^4

What is the first step in subtracting numbers in scientific notation?

• Add the coefficients

• Divide the exponents

• Adjust the exponents to be the same

• Multiply the coefficients

What is the result of subtracting 3.5 x 10^-2 and 0.66 x 10^-2?

• 4.16 x 10^-2

• 2.84 x 10^-3

• 2.84 x 10^-2

• 4.16 x 10^-3

What should you do if the coefficients' sum exceeds 10 when adding in scientific notation?

• Divide the coefficient by 10

• Leave it as is

• Adjust the coefficient and exponent

• Subtract 10 from the coefficient

What is the final step in adding or subtracting numbers in scientific notation?

• Check if the result is in proper scientific notation

• Multiply the exponents

• Divide the coefficients

• Add the exponents