1.   Find 23 + 8.
    A. 301 B. 31
    C. 164 D. 238
    Hint
  2.   Find 5 × 9.
    A. 45 B. 59
    C. 95 D. 14
    Hint
  3.   Evaluate if x = 4 and y = 7:

y + 6
    A. 76 B. 42
    C. 13 D. 10
    Hint
  4.   Evaluate if x = 4 and y = 7:

12 + y
    A. 127 B. 84
    C. 19 D. 16
    Hint
  5.   Evaluate if x = 8 and y = 4:

8x
    A. 864 B. 88
    C. 64 D. 16
    Hint
  6.   Write an expression and evaluate it: A teacher prepared 8 quizzes. Each quiz had n exercises. If n = 20, how many exercises did the teacher prepare?
    A. 8n; 820 B. 8 + n; 28
    C. 8n; 160 D. n − 8; 12
    Hint
  7.   Evaluate if r = 6 and t = 5.

7t
    A. 75 B. 42
    C. 30 D. 35
    Hint
  8.   Write an expression and evaluate it: Va Meng is 2 years younger than her sister, who is s years old. If s = 13, how old is Va Meng?
    A. s − 2; 15 B. s + 2; 15
    C. 2s; 26 D. s − 2; 11
    Hint
  9.   Find the output values for the function rule x ÷ 5.

InputOutput

10

?
20?
30?
    A. 2, 4, 6 B. 5, 15, 25
    C. 15, 25, 35 D. 50, 100, 150
    Hint
  10.   Find the output values for the function rule 5x.

InputOutput

8

?
10?
11?
    A. 58, 510, 511 B. 3, 5, 6
    C. 13, 15, 16 D. 40, 50, 55
    Hint
  11.   Evaluate 18 − (4 × 3).
    A. 11 B. 30
    C. 42 D. 6
    Hint
  12.   Evaluate 20 − (2 × 8).
    A. 4 B. 144
    C. 36 D. 10
    Hint