# PARCC Exponent Practice Problems – Test 1

#### 1. 10^{4} is not equal to which of the following?

Correct!
Wrong!

1. **A:** 10^{4}=10^{.}10^{.}10^{.}10, or 10,000.

#### 2. Multiply 10^{4 }by 10^{2}

Correct!
Wrong!

2. **C:** When multiplying terms with the same base, the exponents should be added. Thus, 10^{4} ^{.} 10^{2}=10^{6}.

#### 3. Divide x^{5 }by x^{2}

Correct!
Wrong!

3. **D:** When dividing terms with the same base, the exponents should be subtracted. Thus, *x*^{5}/*x*^{2} =*x*^{3}.

#### 4. Find 8.23 x 10^{9}

Correct!
Wrong!

4. **D:** The decimal will be moved to the right 9 places. Thus 7 zeros will be added to the right of 823, giving 8,230,000,000.

#### 5. 83,000 equals:

Correct!
Wrong!

5. **B:** Moving the decimal to the right of the digit, 8, gives the equivalent expression, 8.3x10^{4}, since there are 4 digits to the right of the 8.

#### 6. .00875 equals:

Correct!
Wrong!

6. **B:** Moving the decimal to the right of the 8 gives 8.75x10^{-3}, since the decimal must be moved 3 places to the right.