This number chart is from 0 to 99 and has loads of number patterns. It is a basis for addition and subtraction as well as multiplication and division. The row-column format helps to show the logical pattern of counting numbers (e.g. row 3 column 5 is 34). The chart is also useful for reading the numbers as the names of each number from 1-9 and 20 -99 can be identified by row and column as well. Stay tuned for lesson plans and activities to accompany this number chart!