Use Place Value Tents as a hands on way for students to manipulate numbers within 999. These are a great visual reminder that a number such as 234 is actually 200 + 30 + 4.
Students can use all 3 place values, or just tens and ones for differentiation.
Print each place value on different colored card stock, cut them out, making sure each child has one complete set.
Student can use these cooperatively in centers, they can use them as practice in whole group, or individually for a math center.