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Math

DMSB

Dad Mom Sister Brother

Helps you remember the long-division steps.

Quick self-quiz

Tap each word to check what it stands for.

When to use it

Use it each time you work through a digit of a long-division problem to keep the four steps in the correct order.

Example

Dividing 156 by 4: Divide 15 by 4 (3), Multiply 3 x 4 (12), Subtract 15 - 12 (3), Bring down 6 to get 36, then repeat.

Common mistake

Skipping the Bring Down step and starting a new division cycle before pulling the next digit into the remainder.