30 minutes · Pair work · Calculator. All amounts are invented and cover the same period. No deposits, withdrawals, dividends, fees or currency changes are included.
1. Compare money and percentages
Subtract the start from the end. Divide the change by the starting value and multiply by 100. Rank the accounts by money first, then by percentage.
On screen, the table can scroll sideways.
| Account | Start (SEK) | End (SEK) | Change (SEK) | Change (%) |
|---|---|---|---|---|
| A | SEK 1,000 | SEK 1,120 | ||
| B | SEK 3,000 | SEK 3,240 | ||
| C | SEK 2,000 | SEK 1,840 |
Ranking in money with an explanation. Ranking in percentage with an explanation:
2. Use the same starting amount
Let each account start at SEK 1,000. Keep its percentage change from task 1. Calculate the new ending values and explain why the ranking in money changes.
On screen, the table can scroll sideways.
| Account | New start | New end |
|---|---|---|
| A | SEK 1,000 | |
| B | SEK 1,000 | |
| C | SEK 1,000 |
3. Follow two periods for account A
After its 12% rise, A falls by 12%. Which amount is the new base? Calculate the ending value and the total change from the original SEK 1,000.
4. Exit question
One account rises from SEK 500 to SEK 575; another from SEK 2,000 to SEK 2,200. Which gains more money and which gains more in percentage terms?