Direction: Choose the letter of the correct answer. 1. In this expression, which do you simplify first? 20 + (10 - 15 = 3) x 3 A. 20 - 10 B. (10-15-3) B. (10-15+3) C. 20 X 3 X3 D. 3X3 2. Which is the correct answer for this expression? 6 + (9 + 3 x 4) A 14 B. 16 C. 18 D. 19 3. Simplify this expression: (2 x 30) + (90 = 2) = A. 95 B. 105 C. 115 D. 125 4. What is the smallest number that has 3, 5 and 6? A. 20 B. 30 C. 40 D.50 5. Alvin was asked to find the GCF of 42 and 49. What number did he find? A7 B. 14 C. 12 D. 18 6.3x(4+4)-_=20. Find the missing number. A.3 B.4 C.6 D.8 7. Alvin was asked to find the GCF of 42 and 49. What number did he find? A.7 B. 14 C. 12 D. 18 8. What is the LCM of this set of numbers 24, 48, 80? A. 220 B. 260 C. 240 D. 280 9. Simplify this expression: (4 + 3) x 10 = 2 + (5 x 6) = A. 55 B. 60 C. 65 D.70 10. The letter N represents a number between 50 and 60. The GCF of N and 16 is 8. Find N. A. 52 B.54 C.56 D.58 11. A teacher wrote the expression (4 + 2 x 5) +7 + 3 on the board and called 4 pupils to solve it. Which one is correct? A3 B. 4 C.5 D.6 12. There are 36 girls and 16 boys in the Mathematics Club organized by Mr. Balala. He plans to divide the same gender equally. What could be the biggest number of members can each of the group have? A4 B. 12 C.8 D.16 13. Find the correct answer of the following (10 = 2 x 5) x (14 + 6 - 4) + 2. A. 400 B. 402 C.404 D. 502 -​