Multiplying and dividing

For bigger multiplications, split the numbers into parts you can handle (the grid method) or use column multiplication. For division, use short division (the bus stop) and carry remainders to the next digit.

Key facts

• Grid method: split each number into hundreds, tens and ones, multiply each pair, add.
• Column method: multiply by the ones, then the tens (put a 0 first), then add.
• Short division: divide each digit in turn and carry the remainder.

Worked examples