Division is the inverse of multiplication. It splits a total into equal groups. When we write 12 ÷ 3 = 4, we are saying 12 can be split into 3 equal groups of 4.

For long division, follow the steps: Divide, Multiply, Subtract, Bring down (DMSB). Repeat until all digits have been processed. If there is a leftover amount, record it as the remainder.

To check your work, multiply the quotient by the divisor and add the remainder. The result should equal the dividend. For example: 17 ÷ 5 = 3 remainder 2. Check: 3 × 5 + 2 = 17. ✓