An exponent is a number that show how many times a base is used as a factor.

7⁴ = 7*7*7*77⁴=2401

When a number is squared-that means the base is used as a factor 2 times

When a number is cubed – that means the base is used as a factor 3 times

Sometimes exponents are written in word form.

4⁵ is written as four to the power of five

Practice Book page 14.1 (correct)

Math Journal 2 page 211-212

Math Masters page 92

Write 53,471 in expanded form in your math spiral.

50,000 + 3,000 + 400 + 70 + 1 Now separate each numeral and multiply it

by the place value it sits in5 x 10,000 + 3 x 1,000 + 4 x 100 + 7 x 10 +

1 Next use exponents and 10 as the base

number to rewrite the place value number5 x 10⁴ + 3 x 10³ + 4 x 10 + 7 x10 + 1

2

Math Practice Book page 14.2

Problem Solving 14.2 Math Journal 2 page 215, 218

Math Masters page 298

Math Journal 2 page 216 A negative exponent tells you which

place value to go to:-1 = tenth place

-2 = hundredth place-3 = thousandth place

-4 = ten-thousandth place