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Easy challenge

Easy: Percentage vs decimal

Someone typed 5 into a % formatted cell (meaning “5%”) but Excel stores 5 → displays 500%. GST amounts explode. Use 0.05 (or type 5%).

About this data: Made-up GST lines for Vikram Joshi (Ahmedabad) and Fatima Al-Sayed (Cairo). Practice only.

Why → What → How

Why: Percent format multiplies displayed value by 100. Typing 5 means 500%, not 5%.

What: Five items; broken rates show 500%, total GST 3200. Fixed 5% rates, total GST 32 (LibreOffice verified).

How:

  1. Open GST.
  2. Look at GST_rate — 500%.
  3. Replace with 0.05 (or type 5% with keyboard).
  4. Confirm total GST → 32.

Ravindra Bagale’s Tip

When a cell is already %, type 5% or 0.05 — never bare 5 unless you want 500%.

Bugs explained (with mini examples)

Bug 1 — Bare 5 in % cell

Stores 5 → shows 500% → Base*5.

Bug 2 — Nobody notices until invoice review

3200 vs 32.

Practice tasks (12)

  1. Task 1. Read one GST_rate display.
    Hint: 500% broken.
  2. Task 2. What number is stored?
    Hint: 5.
  3. Task 3. Correct rate for 5%.
    Hint: 0.05.
  4. Task 4. Fix all rates.
    Hint: Fill.
  5. Task 5. Total GST target.
    Hint: 32.
  6. Task 6. Notebook GST at 5% on 200?
    Hint: 10.
  7. Task 7. Type 5% with keyboard in a % cell — what stores?
    Hint: 0.05.
  8. Task 8. Interview sentence.
    Hint: “Rate was 500% because of percent format.”
  9. Task 9. Change to 12% correctly.
    Hint: 0.12.
  10. Task 10. Does number format alone change the stored value when you only reformat?
    Hint: Careful — know current value.
  11. Task 11. Show formula bar vs display.
    Hint: Compare.
  12. Task 12. Bonus: data validation 0–1 for rates.
    Hint: Prevent 5.

In-browser formula check

Type the fixed formula you would put in the named cell. We check formula text — open the workbook for full recalculation.

Step-by-step solution (try first)
  1. Set C5:C9 to 0.05 with % format.
  2. Total GST 32. LO: broken 3200, fixed 32.

Quick quiz

Q1. Typing 5 into a % cell stores:
Q2. 5 displayed with % format shows:
Q3. Fixed total GST in this workbook:
Q4. Correct way to enter five percent:
Q5. Base 200 at 5% GST is: