LLN Number Operations & Arithmetic 2 — Questions and Answers

Question 1: What is 15% of $320?

$45
$48 (Correct answer)
$52
$38

Correct answer: $48

15% of $320 = 0.15 x 320 = $48.

To find 15% of $320, convert 15% to the decimal 0.15 and multiply: 0.15 x 320 = $48. This type of percentage calculation is commonly needed in Australian retail, hospitality, and financial contexts.

Question 2: A delivery driver completed 3/5 of their route. If the total route is 150 km, how many kilometres remain?

60 km (Correct answer)
90 km
50 km
75 km

Correct answer: 60 km

Completed: 3/5 x 150 = 90 km. Remaining: 150 - 90 = 60 km.

Three-fifths of 150 km = (3 divided by 5) x 150 = 90 km completed. The remaining distance is 150 - 90 = 60 km. Calculating portions of a route or task is a practical skill for transport and logistics workers across Australia.

Question 3: A plumber charges a $90 call-out fee plus $55 per hour. How much does a 3-hour job cost in total?

$165
$255 (Correct answer)
$235
$195

Correct answer: $255

3 hours x $55 = $165. Total = $90 + $165 = $255.

The total cost is the fixed call-out fee plus the hourly charge: $90 + (3 x $55) = $90 + $165 = $255. Understanding this type of pricing structure is relevant for Australian tradespeople and consumers dealing with service quotes.

Question 4: A baker uses 750g of sugar for one batch of biscuits. How many grams are needed for 6 batches?

4,000g
4,500g (Correct answer)
5,000g
3,750g

Correct answer: 4,500g

750g x 6 = 4,500g.

Multiplying 750g by 6 batches gives 4,500g. This straightforward multiplication is a core numeracy skill used in food production, hospitality, and manufacturing environments throughout Australia.

Question 5: Round 4,876 to the nearest hundred.

4,800
4,900 (Correct answer)
5,000
4,870

Correct answer: 4,900

The tens digit is 7, which is 5 or more, so round up: 4,876 rounds to 4,900.

To round to the nearest hundred, examine the tens digit: 7. Since 7 is 5 or greater, round up the hundreds digit from 8 to 9. The result is 4,900. Rounding is used throughout Australian workplaces for estimating, budgeting, and reporting.

Question 6: A fabric roll is 45 metres long. A tailor cuts off 12.5 metres. How much fabric is left?

31.5 m
32.5 m (Correct answer)
33.5 m
30.5 m

Correct answer: 32.5 m

45 - 12.5 = 32.5 metres remaining.

45 metres minus 12.5 metres leaves 32.5 metres of fabric. Calculating remaining quantities after use or cutting is a practical numeracy skill in trades and manufacturing industries across Australia.

LLN Number Operations & Arithmetic 2

What is 15% of $320?

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