HOTS Mathematics Primary 4 Factors and Multiples

Ahmad lists all the common factors of 36 and 48. He then finds the sum of all these common factors. What is the sum?

A 12
B 16
C 24
D 28
Show Worked Solution

Worked Solution

Step 1: List all factors of 36. Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36 Step 2: List all factors of 48. Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 Step 3: Identify the common factors (numbers in both lists). Common factors: 1, 2, 3, 4, 6, 12 Step 4: Find the sum of all common factors. 1 + 2 + 3 + 4 + 6 + 12 = 28 Answer: 28

Correct answer: 28

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