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# Exponents and Roots Practice Problems: GED Math

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### Problems

1. Simplify 72.
1. 14
2. 7.2
3. 3.5
4. 49
2. Simplify 2–3.
1. 6
2. –8
3. –6
3. Simplify .
1. 5
2. 3
3. 9
4. 251/2=
1. 12.5
2. 625
3. –625
4. 5
5. 22 × 23 =
1. 25
2. 10
3. 45
4. 64
5. 2
6. What is 7.206 × 10–4 written in standard form?
1. 72,060
2. 0.00007206
3. 0.0007206
4. 7,206
5. 72,060,000
7. What is 567,090,000 written in scientific notation?
1. 567,090 × 103
2. 5.6709 × 103
3. 5.679 × 10
4. 567 × 109
5. 0.56709 × 109
8. (5.4 × 1016) ÷ (9 × 1014) =
1. 600
2. 0.6
3. 60
4. 6
5. 0.006
9. –52 =
1. –10
2. 25
3. –25
4. 10
10. 700 + 25 – 52 × 2 =
1. 725
2. 1,036,800
3. 675
4. 1,400
5. 705
1. –112 =
1. –22
2. –121
3. 121
4. 22
5. 101
2. 811/4 =
1. 20.25
2. 3
3. 324
3. =
1. 4
2. 192
3. 21
4. =
1. 13
2. 16
3. 16.9
4. 84.5
5. –16
5. =
1. –16
2. 12
1. –3
6. Write 2.701 × 107 in standard form.
1. 27 × 106
2. 27,010,000
3. 27,010,000,000
4. 0.0002701
5. 0.0000002701
7. Write 4.09 × 10–5 in standard form.
1. 409,000
2. 0.00000409
3. 0.0000409
4. 40,900,000
5. 409 × 10–7
8. (2.5 × 10–4) × (3.0 × 108) =
1. 0.00075
2. 7.5
3. 75,000
4. 7,500,000,000,000
5. 750
9. 5 – (–17 + 7)2 × 3 =
1. –135
2. 315
3. –295
4. –45
5. 75

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