Use this power point to practice or revise numbers from 0 to 100. The students learn calculation signs. Very easy exercises to count sums and subtractions and use the calculating signs. The slides are animated. Show the slide, let the students complete the answer and then click to show them the answer. This can be done for reading the counting signs and doing its corresponding exercises. It can also be applied to the addition and subtraction easy calculation. At the end of the presentation, students fill the gab with the right calculation sign. Teacher clicks to check the answers.