# Exponent Practice Problems – Test 1

##### 1. 104 is not equal to which of the following?
1. 100,000
2. 0.1 x 105
3. 10 x 10 x 10 x 10
4. 102 x 102
5. 10,000
1. 108
2. 102
3. 106
4. 10-2
5. 103

1. x7
2. x4
3. x10
4. x3
5. x2.5
##### 4. Find 8.23 x 109
1. 0.00000000823
2. 0.000000823
3. 8.23
4. 8230000000
5. 823000000000
1. 83.0 x 104
2. 8.3 x 104
3. 8.3 x 103
4. 83.0 x 105
5. 83.0 x 102
##### 6. 0.00875 equals:
1. 8.75 x 10-2
2. 8.75 x 10-3
3. 8.75 x 10-4
4. 87.5 x 10-3
5. 875 x 10-4

###### 1. A

104=10.10.10.10, or 10,000.

###### 2. C

When multiplying terms with the same base, the exponents should be added. Thus, 104 . 102=106.

###### 3. D

When dividing terms with the same base, the exponents should be subtracted. Thus, x5/x2 =x3.

###### 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. B

Moving the decimal to the right of the digit, 8, gives the equivalent expression, 8.3×104, since there are 4 digits to the right of the 8.

###### 6. B

Moving the decimal to the right of the 8 gives 8.75×10-3, since the decimal must be moved 3 places to the right.