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5 steps: (1) 'Find 30% of 250'. Method: convert percent to decimal (30% = 0.30), then multiply (0.30 × 250 = 75). (2) Alternative: 30% = 30/100, so 30/100 × 250 = 7500/100 = 75. (3) Mental shortcuts: 10% of anything = divide by 10. So 30% = 3 × 10% = 3 × 25 = 75. (4) Example: 15% of 80. 10% = 8, 5%

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