**Collecting
gold **

Pretend you are a jeweler. Sometimes people come in to get rings resized. When you cut down a ring to make it smaller, you keep the small portion of gold in exchange for the work you have done. Recently you have collected these amounts:

1.14 g 0.089 g 0.3 g

Now you have a repair job to do for which you need some gold. You are wondering if you have enough. How much gold have you collected? (NCTM P&S 2000, pp. 194-5)

**Approaches**

This problem is intended as a motivation for developing algorithms for adding decimals. Students might check their ideas against a calculator's results.

Ignore the decimal points.

14 + 89 + 3 = 106, so the sum is 1.106 or 2.06.

**Your
experience**

Have you used this problem with a class and seen approaches other than(or more specific than) those mentioned above? Or do you have other comments or criticisms or stories? If so, please tell us!

*Last updated 30 November, 2004*