Praxis Mathematics CKT 7813 Domain 1: Counting and Operations with Whole Numbers Welcome to your Praxis Mathematics CKT 7813 Domain 1: Counting and Operations with Whole Numbers 1. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers If \( 4^{2x} = 1024 \), what is the value of \( x \)? A. 2 B. 3 C. 4 D. 5 None 2. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers What is the units digit of \( 7^{2023} \)? A. 1 B. 3 C. 7 D. 9 None 3. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers Which of the following is a correct representation of 540 in expanded form? A. \( 5 \times 100 + 4 \times 10 + 0 \times 1 \) B. \( 500 + 40 + 0 \) C. \( 5 \times 10^2 + 4 \times 10 + 0 \) D. \( 500 + 4 \times 10 \) None 4. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers What is the sum of all even numbers between 1 and 100, inclusive? A. 2550 B. 2500 C. 2450 D. 2400 None 5. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers Which of the following numbers is divisible by both 2 and 3? A. 114 B. 118 C. 122 D. 126 None 6. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers If \( 3x + 5 = 20 \), what is the value of \( x \)? A. 3 B. 4 C. 5 D. 6 None 7. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers What is the difference between the largest 3-digit number and the smallest 4-digit number? A. 1 B. 100 C. 999 D. 1001 None 8. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers A number is increased by 50\% and then decreased by 50\%. The final number is what percent of the original number? A. 75\% B. 100\% C. 50\% D. 25\% None 9. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers What is the value of \( 9 \times 111 \)? A. 909 B. 999 C. 1001 D. 1101 None 10. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers If \( 5x = 3y \) and \( y = 15 \), what is the value of \( x \)? A. 5 B. 9 C. 10 D. 12 None 11. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers Which of the following is the prime factorization of 360? A. \( 2^3 \times 3^2 \times 5 \) B. \( 2^2 \times 3^2 \times 5 \) C. \( 2^4 \times 3 \times 5 \) D. \( 2^3 \times 3 \times 5^2 \) None 12. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers What is the least common multiple (LCM) of 18 and 24? A. 72 B. 144 C. 36 D. 216 None 13. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers If \( 5^n = 625 \), what is the value of \( n \)? A. 2 B. 3 C. 4 D. 5 None 14. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers Which of the following is a factor of both 28 and 42? A. 14 B. 6 C. 7 D. 4 None 15. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers What is the remainder when 1234 is divided by 11? A. 2 B. 3 C. 1 D. 0 None 16. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers How many different prime numbers are factors of 210? A. 3 B. 4 C. 5 D. 6 None 17. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers Which of the following expressions is equivalent to \( 16 \times 25 \)? A. \( 4^2 \times 5^2 \) B. \( 8^2 \times 5 \) C. \( 4 \times 5^3 \) D. \( 2^4 \times 5^2 \) None 18. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers What is the greatest common divisor (GCD) of 48 and 180? A. 12 B. 18 C. 24 D. 36 None 19. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers How many factors does the number 100 have? A. 6 B. 9 C. 8 D. 10 None 20. Praxis Mathematics CKT 7813: Counting and Operations with Whole Numbers Which of the following is a composite number? A. 31 B. 37 C. 41 D. 49 None 1 out of 20 Time is Up! Time's up
