HiSET Math Domain 1: Numbers and Operations Welcome to your HiSET Math Domain 1: Numbers and Operations 1. HiSET Math: Numbers and Operations If \( \frac{2}{3} \) of a number is 12, what is \( \frac{4}{5} \) of the same number? \( \frac{80}{3} \) 10 \( \frac{96}{5} \) 16 None 2. HiSET Math: Numbers and Operations What is the sum of the prime factors of 210? 15 16 17 18 None 3. HiSET Math: Numbers and Operations If \( 5^x = 125 \), what is the value of \( 5^{x+2} \)? 625 3125 1250 2500 None 4. HiSET Math: Numbers and Operations If the average of four consecutive even numbers is 17, what is the largest number? 18 20 22 24 None 5. HiSET Math: Numbers and Operations What is the least common multiple (LCM) of 18 and 24? 72 144 36 48 None 6. HiSET Math: Numbers and Operations If \( \frac{1}{x} + \frac{1}{y} = \frac{1}{8} \) and \( x = 16 \), what is the value of \( y \)? 16 24 32 48 None 7. HiSET Math: Numbers and Operations What is the result when the least common denominator of \( \frac{1}{6} \) and \( \frac{1}{8} \) is used to express these fractions? \( \frac{4}{24} \) and \( \frac{3}{24} \) \( \frac{4}{48} \) and \( \frac{6}{48} \) \( \frac{2}{24} \) and \( \frac{3}{24} \) \( \frac{4}{12} \) and \( \frac{3}{12} \) None 8. HiSET Math: Numbers and Operations Which of the following is a cube root of 216? 6 8 9 12 None 9. HiSET Math: Numbers and Operations A number increased by 25\% equals 125. What is the number? 90 100 110 120 None 10. HiSET Math: Numbers and Operations If the reciprocal of a number minus 2 equals the number itself, what is the number? 2 \( \frac{1}{2} \) \( -1 \) \( -\frac{1}{2} \) None 1 out of 10 Time is Up! Time's up
