WA.K.1. Core Content: Whole numbers (Numbers, Operations): Students begin to develop basic notions of numbers and use numbers to think about objects and the world around them. They practice counting objects in sets, and they think about how numbers are ordered by showing the numbers on the number line. As they put together and take apart simple numbers, students lay the groundwork for learning how to add and subtract. Understanding numbers is perhaps the most central idea in all of mathematics, and if students build and maintain a strong foundation of number sense and number skills, they will be able to succeed with increasingly sophisticated numerical knowledge and skills from year to year.
K.1.A. Rote count by ones forward from 1 to 100 and backward from any number in the range of 10 to 1.
K.1.D. Order numerals from 1 to 10.
K.1.E. Count objects in a set of up to 20, and count out a specific number of up to 20 objects from a larger set.