Adding and Subtracting Expressions in Scientific Notation

How many cars are registered in the US compared to Canada?

• 275 million in the US, 34 million in Canada

• 241 million more in the US

• 309 million in both countries combined

• 34 million more in Canada

What happens when you move the decimal to the left in scientific notation?

• No change to the power of 10

• Increase the power of 10

• Reset the expression to zero

• Decrease the power of 10

What is the scientific notation for 5,800?

• 580 x 10^1

• All of the above

• 58 x 10^2

• 5.8 x 10^3

How do you make the first factor smaller in scientific notation?

• Add a power of 10

• Move the decimal to the right

• Move the decimal to the left

• Subtract a power of 10

To add numbers in scientific notation, what must be the same?

• The powers of 10

• The decimal places

• The first factor

• The total value

What is the final step in adjusting expressions in scientific notation?

• Check the power of 10 matches across expressions

• Verify the total value remains unchanged

• Convert back to standard notation

• Ensure the decimal is moved correctly

How do you adjust expressions to have the same power of 10?

• Add or subtract powers of 10

• Multiply by a different number

• None of the above

• Change the decimal place

What is the result of subtracting the number of cars in Canada from the US in scientific notation?

• 3.4 x 10^7

• 2.41 x 10^8

• 27.5 x 10^7

• 24.1 x 10^7

What is the correct scientific notation for 560,000?

• All of the above

• 560 x 10^3

• 56 x 10^4

• 5.6 x 10^5

What is the scientific notation for 7 billion 380 million?

• 738 x 10^7

• 73.8 x 10^8

• 7.38 x 10^9

• All of the above