This file is 3 pages. It is designed for my 1st grade class, but could be used in Kindergarten or 2nd grade as well.
Advanced (3 stars) includes numbers up to 135.
On level (2 stars) includes numbers up to 96.
Below (1 star) includes tens up to 60, and other double-digit numbers up to 25.
The worksheet meets the following 1st grade Common Core Standards:
CCSS.Math.Content.1.NBT.B.2 Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
CCSS.Math.Content.1.NBT.B.2a 10 can be thought of as a bundle of ten ones — called a “ten.”
CCSS.Math.Content.1.NBT.B.2b The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
CCSS.Math.Content.1.NBT.B.2c The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).