Journal of the Mathematics Council of the Alberta Teachers’ Association
Volume 32 Issue 3, August 1995
4 – 6
The 100s Chart: A Stepping Stone to Mental Mathematics
Carol A. Thornton, Graham A. Jones and Judy L. Neal
“I want a hamburger, cider and apple pie,” said Katie. Kirk thought, “That’s 25 and 11, that’s 35, 36, and 20 for the apple pie makes 46, 56¢.” Katie replied, “That’s right. I got out a quarter for the hamburger, a dime and a penny for the cider, and two more dimes for the apple pie and counted 25, 35, 36, 46, 56¢” (see Figure I).
