At NTUC FairPrice, Mei Ling's shopping basket has chicken at $7.85, a packet drink at $2.45, and a box of kueh at $0.95. She wants a quick estimate of her total to the nearest dollar before checking out. What is the estimated total?
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Worked Solution
Step 1: Round each price to the nearest dollar. Look at the tenths digit (the first digit after the decimal point): $7.85 — tenths digit is 8 → 8 ≥ 5 → round UP → $8. $2.45 — tenths digit is 4 → 4 < 5 → round DOWN → $2. $0.95 — tenths digit is 9 → 9 ≥ 5 → round UP → $1.
Step 2: Add the rounded amounts: $8 + $2 + $1 = $11.
Step 3: Sanity check — the EXACT total is $7.85 + $2.45 + $0.95 = $11.25, which itself rounds to $11 to the nearest dollar. The estimate is consistent. ✓ Final answer: $11.
Answer: $11
Correct answer: $11
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