Question 18 of 47intermediate🔧 ApplyNumerical3 marks

A family of 4 produces around 35 kg of kitchen waste in a month. How much waste will the family produce in a year? The family produces ___ kg of waste in a year.

Correct Answer

Step 1: Identify: 35 kg per month × 12 months

Step 2: Calculate: 35×1235 \times 12 = 35 × (10 + 2)

Step 3: 35×1035 \times 10 = 350, 35×235 \times 2 = 70

Step 4: 350 + 70 = 420 kg

Answer: The family produces 420 kg of waste in a year.

Exercise: Waste and Composting | Q: 1 | (Page Page 8-9)
For More Understanding

Explanation

The chapter shows multiple methods to solve this. Using Nida's method: 35×1235 \times 12 = (30 + 5) × 12 = 30×1230 \times 12 + 5×125 \times 12 = 360 + 60 = 420. Or using the grid method shown in the chapter.

Solution Steps

  1. Step 1: Identify: 35 kg per month × 12 months

  2. Step 2: Calculate: 35×1235 \times 12 = 35 × (10 + 2)

  3. Step 3: 35×1035 \times 10 = 350, 35×235 \times 2 = 70

  4. Step 4: 350 + 70 = 420 kg

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