CCSS.Math.Content.2.NBT.A.1.b 2nd Grade
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). Practice exercise for CCSS.Math.Content.2.NBT.A.1.b 2nd grade common core math.