Multiplication and division are connected. Think about the times table facts you have been learning. 3 'multiplied by' 7 makes 21. 7 'times' 3 equals 21. The inverse operation is division. 21 'shared ...

Subtracting larger numbers in your head is not always easy, so you can use the column method to take one number away from another. You write the larger number above the smaller number, so that the ...

The number 1 has one digit and is divisible by 1; 12 has two digits and is divisible by 2; 123 has three digits and is divisible by 3. Which new digit (not already used) can be added to the end of 123 ...