Powers of Ten

Which of the following expressions has the value of 12400

• 12.4 ÷ 10²

• 124 x 10³

• 12.4 ÷10³

• 124 x 10²

98 x 10²

• 9.80

• 9,800

• 98,000

• 1,960

What is the meaning of 10³?

• 10 x 3

• 10 + 10 + 10

• 10 + 3

• 10 x 10 x10

When multiplying by a power of ten, the decimal point moves  _______ .

• left

• up

• down

• right

When dividing by a power of ten, the decimal place moves__________.

• up

• left

• right

• it does not move

When multiplying by a power of ten, how many times does the decimal place move to the right?

• once for every zero

• twice for every zero

• three times for every zero

• it never moves

Ms. Wheeler owes Aja'h $1000. What should this number look like in exponent form?

• 10¹

• 10¹⁸

• 10³

• 10⁶

Express the following numbers as powers of ten:
100,000

• 10⁴

• 10⁵

• 10⁶

• 10⁷

3.21÷10²

• 321

• 32.1

• 0.0321

• 0.321

___ ÷ 10² = 2

• 20

• 0.2

• 200

• 0.02