Count on or back in ones or tens, starting from any given two-digit number.
Read and write whole numbers to at least 100 in figures and words.
Know what each digit in a two-digit number represents, including 0 as a placeholder and partition two-digit numbers into a multiple of ten and ones (TU).
Say the number that is 1 or 10 more or less than any given two-digit number.
Order whole numbers to at least 100, and position them on a number line and 100 square.