Question 4 - Figure it out (Page 41, 42) - Chapter 2 Class 7 - Arithmetic Expressions (Ganita Prakash)

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Question 4 Find out the sum of the numbers given in each picture below in at least two different ways. Describe how you solved it through expressions.Left picture ✅ Option 1: Add group-wise Count all 4s: 5 × 4 Count all 8s: 4 × 8 Total sum = 5 × 4 + 4 × 8 = 20 + 32 = 52 ✅ Option 2: Row-wise addition Row 1: 4 + 8 + 4 = 16 Row 2: 8 + 4 + 8 = 20 Row 3: 4 + 8 + 4 = 16 Total sum = 16 + 20 + 16 = 52 Right picture ✅ Option 1: Add group-wise Count all 5s: 5 × 8 Count all 6s: 6 × 8 Total sum = 5 × 8 + 6 × 8 = (5 + 6) × 8 = 11 × 8 = 88 ✅ Option 2: Row-wise addition Row 1: 5 + 6 + 6 + 5 = 22 Row 2: 6 + 5 + 5 + 6 = 22 Row 3: 6 + 5 + 5 + 6 = 22 Row 4: 5 + 6 + 6 + 5 = 22 Total sum = 22 + 22 + 22 + 22 = 88