Standards derived from the same national standard
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: 10 can be thought of as a bundle of ten ones—called a "ten"; the numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones; 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.
Understand that the two digits of a two-digit number represent amounts of tens and ones.
Know that the digits of a two-digit number represent groups of tens and ones (e.g., 39 can be represented as 39 ones, 2 tens and 19 ones, or 3 tens and 9 ones).