Math Grade 2 The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones)-2.NBT.A.1.B

CCSS.MATH.CONTENT.2.NBT.A.1.B underscores the understanding of the place value of three-digit numbers where the tens and ones places are zeros. This standard introduces students to the concept that numbers such as 100, 200, 300, and so on, specifically represent hundreds, with no tens and ones present. For example, the number 400 signifies four hundreds, 0 tens, and 0 ones. This helps to further embed the understanding of the base-10 system and the importance of zero in place value.