Back to Labs
๐ŸŽฎ
Free Interactive Lab

Calicut Spice Market: Decimal to Octal & Hex Converter

Encoding Schemes and Number System

Step into the historic Calicut spice market where Arab, Chinese, and local traders record quantities in different number systems. Visualize the repeated-division method to convert decimal weights into octal and hexadecimal notations used in trade ledgers.

25 min
Duration
3
Missions
10
Problems
160
XP

Heads up!

Your progress is only saved while you stay on this page. If you leave, refresh, or close the tab, your scores will be lost. Want to keep your points? Sign in for free.

๐Ÿ“– Your Story

You are a young apprentice at the legendary Calicut spice market, a trading hub that has connected India to the world for centuries. Arab merchants record pepper shipments in octal, while Chinese silk traders prefer hexadecimal notation. Your mentor asks you to master the art of converting decimal weights into these systems so you can read every ledger in the market.

What You'll Learn

  • Apply the repeated division method to convert decimal numbers to octal (base-8).
  • Apply the repeated division method to convert decimal numbers to hexadecimal (base-16).
  • Understand how remainders collected in reverse order form the converted number.
  • Recognize that hexadecimal digits Aโ€“F represent decimal values 10โ€“15.

How to Play

1Read each trading scenario and the decimal quantity mentioned.
2Visualize the repeated division steps: divide by the base (8 for octal, 16 for hexadecimal), note the remainder, and continue with the quotient.
3Select the correct answer from the four choices provided.
4Use hints if you're stuck โ€” each hint reveals one more division step.

3 Missions Await

1

Pepper Shipment: Decimal to Octal

3 problems ยท 35 XP

2

Silk Bales: Decimal to Hexadecimal

3 problems ยท 45 XP

3

Grand Bazaar Challenge: Mixed Conversions

4 problems ยท 80 XP

Calicut Spice Market: Decimal to Octal & Hex Converter โ€” Class 11 Computer Science Lab | Apar Academy