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Find the Difference in Cost Between Taha and Iowan's Takeaway Orders
Mathematics
Grade 4 of Primary School
Question Content
b) Taha buys one fish, a portion of peas and a pickled onion. Iowan buys a portion of rice, a sausage and a bread roll. How much more (in £) does Taha pay than Iowan?
Correct Answer
£0.30
Detailed Solution Steps
1
Step 1: Calculate Taha's total cost. Find the prices: Fish = £2.70, Peas = 45p = £0.45, Pickled onion = 25p = £0.25. Add them: £2.70 + £0.45 + £0.25 = £3.40.
2
Step 2: Calculate Iowan's total cost. Find the prices: Rice = 90p = £0.90, Sausage = £1.60, Bread roll = 30p = £0.30. Add them: £0.90 + £1.60 + £0.30 = £2.80.
3
Step 3: Subtract Iowan's total from Taha's total to find the difference: £3.40 - £2.80 = £0.30.
Knowledge Points Involved
1
Currency Conversion (Pence to Pounds)
In UK currency, 1 pound (£) = 100 pence (p). To convert pence to pounds, divide the number of pence by 100. This is used to standardize currency units for addition/subtraction calculations.
2
Decimal Subtraction for Money
When finding the difference between two monetary values, align decimal points and subtract digits from right to left, borrowing as needed. This is used to calculate how much more/less one cost is compared to another.
3
Two-Step Money Comparison
First calculate the total cost for two separate purchases, then find the difference between the two totals. This is a common real-world skill for comparing costs of different sets of items.
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