IXL | Find the missing exponent or base

Find the missing exponent.

1,000

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Learn with an example

question

Find the missing exponent.

100

key idea

An exponent tells you how many times its base is used as a factor.

When 10 is raised to a whole number exponent, its value has a leftmost digit of 1 and all other digits are 0. The exponent tells you how many 0s come after the 1.

Exponent	Power of 10	Value	Number of 0s
1	10 1 = 10	10	1
2	10 2 = 10 10	100	2
3	10 3 = 10 10 10	1,000	3
4	10 4 = 10 10 10 10	10,000	4

solution

To find the missing exponent, look at the right side of the equation and count the number of 0s after 1.

100

There are 2 of them.

So, the missing exponent is 2.

100

Looking for more? Try these:

Lesson: Exponents

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Teacher tools

Work it out

Not feeling ready yet? These can help:

D.2Evaluate powers with whole number bases

B.1Multiply whole numbers

Lesson: Exponents

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