Primary 5 Mathematics — Average Practice | HOTS

HOTS Mathematics Primary 5 Average

Amir's average score for 4 Science tests is 78. After taking a 5th test, his average drops to 74. What did Amir score on his 5th test?

A 58

B 76

C 72

D 62

Show Worked Solution

Step 1: Total score for first 4 tests = 4 × 78 = 312. Step 2: Total score for all 5 tests = 5 × 74 = 370. Step 3: Score on 5th test = 370 − 312 = 58.

Correct answer: 58

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