Missing Numbers

1st Graders have been working on counting, writing, and thinking about the numbers up to 100.  We played Missing Numbers with a partner. One partner covers 5 numbers on a 100 chart and the other partner figures out what numbers are missing and records them on the Missing Numbers recording sheet. 1st Graders used strategies including counting from 1 or another nearby number; looking at the number before and/or after the missing number; and using information about the row and/or column that the missing number is in.