Quinary Addition Question

This page presents you with a problem in quinary addition. The sum of the addends is between decimal 2 and 124, inclusive. As an aid, the values will be represented as quarters, nickels, and pennies and the addition will be animated. You can regulate the speed of the animation.

Type in your sum and click on the "Check It!" button to have it evaluated.

	Quarters	Nickels	Pennies
				$1.21
+				$0.01

441

+001

Speed (in seconds, 1-5)

THINGS TO WATCH FOR

The quinary problem is on the left. Its solution will be shown at the end of the simulation.
Each quinary digit in the problem is represented by a red arrow on a separate number circle.
Each quinary digit is also represented by a number of coins, based on the place value of the digit.
The base 10 equivalent of each quinary number is also represented as dollars and cents.
The Simulation
1. First, the addend at the top will be copied and used as the foundation of the sum.
2. The circles and the coins will be added to the sum, one unit at a time, moving from right to left. Simultaneously, the money sum will be increased.
3. When a set of five coins appears in the sum, it is backgrounded in gold. This will be indicated by a newly filled number circle.
4. When a carry is performed, the set of five will disappear, and a coin (backgrounded in gold) will be added to the column to the left. This will be indicated by a newly increased number circle to the left.

Click on the words for the sources of the coin images: Penny, Nickel, Quarter.