Example: South African Currency Rounding

• The 5c coin is no longer in use, so cash payments are rounded to the nearest 5c.
• Card and digital payments are not rounded.
• Example:
• If the total is R15.83, it is rounded down to R15.80 for cash payments.
• If the total is R15.86, it is rounded up to R15.90 for cash payments.
• Card payments remain R15.83.

3. Worked Examples

Worked Example 1: Rounding for Packaging

A school is catering for 54 learners, and muffins are sold in packs of 6. How many packs should they buy?

• $54 ÷ 6 = 9$ (exact answer, no rounding needed).
• Answer: 9 packs.

Worked Example 2: Rounding for Transport

A school trip to the Montecasino Bird Park requires 36 learners to travel by bus. Each bus holds 60 passengers. How many buses are needed?

• $36 \div 60 = 0.6$→ Since a fraction of a bus is not possible, round up.
• Answer: 1 bus is needed.

Worked Example 3: Rounding for Seating Arrangements

A theatre has 250 seats, and 292 learners are attending. How many empty seats will remain after seating all learners?

• $292 - 250 = 42$ learners need additional seating.
• Answer: 42 learners won't be seated.

Worked Example 4: Rounding for Home Improvement

A homeowner is installing blinds in windows that are 2.8m wide. Each blind covers 1m. How many blinds are needed?

• $2.8 \div 1 = 2.8$ → Since a fraction of a blind is not possible, round up.
• Answer: 3 blinds are needed.

4. Key Takeaways

• Always consider the context when rounding numbers.
• Round up when dealing with whole items, such as seats, buses, or packaging.
• Round down when it benefits practicality, such as currency rounding.