Math Antics - Scientific Notation INTRO

Why is scientific notation used for very large or very small numbers?

• To make them look more complicated.

• To make them easier to write and compare.

• To change their actual value.

• To hide the number of zeros.

What is the correct form of a number written in scientific notation?

• A number multiplied by any power.

• A number with many digits before the decimal, multiplied by 10 to some power.

• A number with only one digit to the left of the decimal, multiplied by a power of 10.

• A number with no decimal point, multiplied by 10.

How would you write 125,000,000 in scientific notation?

• 12.5 x 10^7

• 1.25 x 10^8

• 125 x 10^6

• 0.125 x 10^9

If you shift the decimal point of a number one place to the left, what happens to the number's value?

• It becomes 10 times larger.

• It becomes 10 times smaller.

• It stays the same.

• It doubles.

In scientific notation, what does the exponent tell you about the number?

• Its exact value.

• Its order of magnitude.

• How many zeros it has.

• Whether it's a positive or negative number.

What is scientific notation primarily used for?

• Writing very small numbers only.

• Writing very large numbers only.

• Writing numbers with many decimal places.

• Writing very large or very small numbers in a shorter way.

What does a negative exponent in scientific notation tell us about the number?

• The number is multiplied by 10 repeatedly.

• The number is divided by 10 repeatedly.

• The number is a whole number.

• The number is exactly zero.

How can you quickly find the order of magnitude of a number written in scientific notation?

• By looking at the first digit of the number.

• By counting the total number of digits.

• By checking the exponent of 10.

• By adding all the digits together.

When comparing two numbers written in scientific notation, how can you easily tell which number is larger?

• The number with more digits before the decimal point is larger.

• The number with the larger exponent of 10 is generally larger.

• The number with fewer zeros is larger.

• The number with a negative exponent is always larger.

If a number in scientific notation has a positive exponent, how do you convert it to its regular form?

• Shift the decimal point to the left.

• Shift the decimal point to the right.

• Add zeros to the beginning of the number.

• Divide the number by the exponent.