Powers of Ten Lesson

take a look and make a prediction on the next slide.

Powers of ten are numbers that multiply and show repeated addition or in this case multiplication.

• Over here it says 10², now we must multiply 10, twice.

• As an example, 10 x 10 = 100.

• So the answer is 100.

• Another way to do it is just add 2 zeros behind the one.

• ​The little 2 behind 10 is called an exponent.

​In other words...

​

​The exponent of a number shows how many times the number is multiplies by itself.

• This time, I have laid the equation underneath it.

• when we multiply, we start with 3 x 3 and get 9.

• Next we multiply 9x3 because 3 is the next number, and so we get 27.

• Lastly we get 27 x 3 and get the answer which is 81!

Note* Any time a number has a power of 0, it always is equal to 1.

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10​⁰ = 1

36⁰ = 1​

51⁰​ = 1

88⁰ = 1​

When we say these powers, we say it like this, " 10 to the 5th power", " 6 to the second power", "4 to the first power".

You have now understood what the powers of ten is!