2. You go to the store to go shopping. You find a jacket you like that costs $50, but you have a coupon for 30% off. How much will the jacket cost with your coupon?

1. An intuitive understanding of number, their magnitude, relationships, and how they are affected by operations.

2. The ability to work outside the traditionally taught algorithms.

3. The ability to perform mental mathematics

4. The ability to look at the world and make comparisons.

5. (In non-human animals) The ability to perceive changes in the number of things in a collection.