Advanced Mathematics Primary 4 Whole Numbers

The table shows the total rainfall (in mm) recorded at a weather station in Singapore for four months. The National Environment Agency considers a month to be "high rainfall" if it records more than 175 mm of rain. How many of these months are "high rainfall" months?

A 2
B 1
C 3
D 4
Show Worked Solution

Worked Solution

Step 1: Identify the benchmark. High rainfall means more than 175 mm. Step 2: Compare each month against 175 mm. January: 218 mm → 218 > 175 ✓ (high rainfall) April: 167 mm → 167 175 ✓ (high rainfall) Step 3: Count the qualifying months. January and November qualify → 2 months. Answer: 2

Correct answer: 2

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