Adding and Subtracting Scientific Notation

This video tutorial covers the basics of adding and subtracting numbers in scientific notation, focusing on cases where the exponents are the same. It explains the general rule of only adding or subtracting the coefficients while keeping the exponents unchanged. The video provides several examples to illustrate these operations and discusses how to adjust results to standard form when necessary.

What is the main focus of this video tutorial?

• Converting scientific notation to decimal

• Multiplying scientific notation

• Dividing scientific notation

• Adding and subtracting scientific notation

What must be true about the exponents when adding or subtracting numbers in scientific notation?

• They must be negative

• They must be different

• They must be the same

• One must be zero

When adding numbers in scientific notation, what do you do with the coefficients?

• Subtract them

• Add them

• Divide them

• Multiply them

In the expression 3 x 10^4 + 2 x 10^4, what is the result?

• 6 x 10^8

• 6 x 10^4

• 5 x 10^8

• 5 x 10^4

What is the result of 4.8 x 10^7 - 1.3 x 10^7?

• 6.1 x 10^7

• 6.1 x 10^8

• 3.5 x 10^8

• 3.5 x 10^7

What should you do if the coefficient in scientific notation is not between 1 and 9.999?

• Multiply by 10

• Adjust the exponent

• Divide by 10

• Ignore it

How do you adjust the exponent when moving the decimal point to the left?

• Subtract the number of moves

• Add the number of moves

• Multiply by the number of moves

• Divide by the number of moves

What is the result of 8.5 x 10^6 + 7.3 x 10^6 in standard form?

• 1.58 x 10^6

• 15.8 x 10^7

• 1.58 x 10^7

• 15.8 x 10^6

If you move the decimal point to the right, what happens to the exponent?

• It increases

• It becomes zero

• It decreases

• It stays the same

What is the result of 9.25 x 10^-7 - 9.16 x 10^-7 in standard form?

• 9 x 10^-7

• 0.09 x 10^-9

• 9 x 10^-9

• 0.09 x 10^-7