Quiz On Counting on a hundred chart online. This is a interactive activity on counting from 1 to 100. There is a chart showing the range of number starting from one up to a hundred. In each question, a number is missing, children have to find the missing number and fill in the blank space provided. Submit your answer each time to see if you found the correct answer. This activity can be recommended for parents and teachers who seek to supplement their kid’s regular course.