Check out this missing numbers resource for numbers 1-20. Included are two task box activities--perfect for math centers and independent practice.
108 task cards included
Level 1: 3 numbers presented with one omitted. Choices for answer are in number order.
Level 2: 3 numbers presented with one omitted. Choices for answers are presented in random order.
Students can use clothespins or dry erase markers to select their answers.