General rule for rounding off

Last updated at August 14, 2026 by

General rule for rounding off - with example - Teachoo Class 7 Maths - Exact and Approximate Values

part 2 - General rule for rounding off - Exact and Approximate Values - Chapter 1 Class 7 - Large Numbers Around us (Ganita Prakash) - Class 7 (Ganita Prakash 1, 2 & old NCERT)

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Transcript

General rule for rounding off General rule says For a number in tens, we round off to tens. For a number in hundred, we round off to hundred. For a number in thousands, we round off to thousands. Eg: 479 × 81 According to general rule, 479 is rounded off to nearest hundred ∴ 479 → 500 81 is rounded off to nearest ten ∴ 81 → 80 So, Estimated Product = 500 × 80 = 5 × 100 × 8 × 10 = (5 × 8) × 1000 = 40 × 1000 = 40000

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