1.NBT.B.2c – Converting Numbers 10 to 99 to Standard Form or Word Form
Converting 10 to 99 to Standard Form or Word Form
1.NBT.B.2c
Understand 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).
