Estimation
Approximate answers instantly.
Core Concepts
In real life, we often don't need the exact answer.Estimation helps us check if a deal is good or if our bill is correct.
Rounding Numbers
Round messy numbers to friendly ones.
49 becomes 50.
302 becomes 300.
Rounding Percentages
Round percentages to common fractions.
49% ≈ 50% (Half).
33% ≈ 1/3.
26% ≈ 25% (Quarter).
Solved Examples
Example 1: 49% of 80
Question: Estimate 49% of 80.
• 49% is very close to 50%.
• 50% is Half.
• Half of 80 is 40.
• Estimate: 40.
Example 2: 33% of 90
Question: Estimate 33% of 90.
• 33% is approximately 1/3.
• 1/3 of 90 is 30.
• Estimate: 30.
Example 3: 1/5 of 49
Question: Estimate 1/5 of 49.
• 49 is very close to 50.
• 1/5 of 50 is 10.
• Estimate: 10.
Example 4: 10.1% of 600
Question: Estimate 10.1% of 600.
• 10.1% is very close to 10%.
• 10% of 600 is 60.
• Estimate: 60.
