30 random questions |30 minutes | Questions are randomized every attempt. Good luck!
ACT Math - Pre-Algebra & Number Sense Practice Test
Test your Pre-Algebra & Number Sense skills with 30 random practice test questions.
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1. Which of the following is a multiple of both 6 and 8?
LCM(6,8) = 24. 24 is divisible by both 6 and 8.
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2. What is 0.004 × 1000?
0.004 × 1000 = 4.
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3. What is 1000 ÷ 0.01?
1000 ÷ 0.01 = 1000 × 100 = 100,000.
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4. A watch costs $120 after a 25% discount. What was the original price?
Sale = 75% of original. 120/0.75 = $160.
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5. What is 6 × 7 - 3 × 8?
42 - 24 = 18.
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6. Express 45 minutes as a fraction of 3 hours.
3 hours = 180 minutes. 45/180 = 1/4.
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7. If a/b = 3/4 and b = 20, what is a?
a/20 = 3/4 → a = 20 × 3/4 = 15.
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8. Which of these is NOT divisible by 4?
34 ÷ 4 = 8.5 — not divisible. 16÷4=4, 28÷4=7, 48÷4=12.
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9. What is the value of 2⁸?
2⁸=256.
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10. What is 3.75 × 4?
3.75×4=15.
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11. What is the decimal equivalent of 3/8?
3 ÷ 8 = 0.375.
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12. What is the value of 5 × (−2)² − 3 × (−2)?
5×4-3×(-2)=20+6=26.
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13. A bag of rice weighs 2.5 kg. How many grams is that?
1 kg = 1000 g. 2.5 × 1000 = 2500 g.
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14. What is 144 ÷ 12 + 144 ÷ 16?
12+9=21.
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15. What is the sum of exterior angles of any triangle?
Sum of exterior angles of any convex polygon=360°.
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16. If a = 3 and b = -2, what is a² - b²?
a² - b² = 9 - 4 = 5.
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17. What is 0.15 × 0.4?
0.15×0.4=0.06.
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18. What is the digit in the hundredths place of 3.456?
3.456: tenths=4, hundredths=5.
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19. What is the value of 5!/(3!×2!)?
5!/(3!2!)=120/12=10.
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20. A worker earns $15/hr. How much does she earn in a 40-hour week?
15 × 40 = $600.
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21. What is the value of 2⁵?
2⁵ = 2×2×2×2×2 = 32.
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22. What is 2.5 × 10⁻¹?
2.5×0.1=0.25.
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23. What is 5/8 + 3/4?
LCD = 8. 5/8 + 6/8 = 11/8.
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24. What is the value of 5 + 3² × 2 - 4 ÷ 2?
9×2=18. 4÷2=2. 5+18-2=21.
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25. What is the value of 3⁻²?
3⁻² = 1/3² = 1/9.
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26. What is 80% of 80% of 100?
0.8×0.8×100=64.
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27. What is 11/12 - 2/3?
11/12 - 8/12 = 3/12 = 1/4.
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28. What is 45 divided by 0.5?
Dividing by 0.5 = multiplying by 2. 45×2 = 90.
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29. What is 2/3 × 9/10?
2/3 × 9/10 = 18/30 = 3/5.
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30. What is 9/2 ÷ 3/4?
9/2×4/3=36/6=6.
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