Determine the product of two numbers in scientific notation

The video tutorial explains how to multiply and divide numbers and powers of 10, focusing on the rules for adding and subtracting exponents. It also covers how to adjust numbers to fit scientific notation, ensuring the result is between 1 and 10.

What is the result of multiplying 7 by 3?

• 20

• 21

• 22

• 23

When multiplying powers of 10, what operation do you perform on the exponents?

• Add

• Subtract

• Multiply

• Divide

What is the problem with the number 21 followed by nine zeros?

• It is too large

• It is not in scientific notation

• It is not between 1 and 10

• It has too many zeros

Explain the process of moving the decimal point to convert a number into scientific notation.

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What is the correct form of the number 21 with nine zeros in scientific notation?

• 2.1 * 10^10

• 21 * 10^9

• 210 * 10^8

• 0.21 * 10^11