Converting Numbers to Standard Form

The video tutorial explains how to convert numbers into standard form. It covers two parts: converting a large number (1,390,000) into standard form by placing a decimal point and determining the power of 10, resulting in 1.39 x 10^6. The second part deals with converting a small number (0.005) into negative standard form, resulting in 5 x 10^-3. Each part is worth one mark in an exam setting, making it a straightforward way to earn points.

What is the first step in converting a large number like 1,390,000 into standard form?

• Count the number of zeros

• Place a decimal point to create a number between 1 and 10

• Multiply the number by 10

• Divide the number by 10

How many decimal places do you move to convert 1.39 into 1,390,000 in standard form?

• 7

• 6

• 5

• 4

When converting 0.005 to standard form, where should the decimal point be placed?

• Between the 0s

• After the first 0

• Before the 0

• After the 5

What is the power of 10 when converting 0.005 to standard form?

• -2

• 3

• 2

• -3

Why is the power of 10 negative when converting a small number like 0.005 to standard form?

• Because the number is greater than 10

• Because the number is less than 1

• Because the decimal point moves to the right

• Because the decimal point moves to the left