Division: Tests for Divisibility . There are a set of tests to determine if a number is divisible by another number. These tests build on the properties of the numbers being divided and the divisor. Some of these rules are intuitive for primary school students e.g. checking if a number is divisible by 2 or by 10. . Their experience with multiplication, division and place value concepts throughout primary school helps to develop their number sense so these applications make sense. Tests for other