Facts are easily forgotten so it is important to continue to practice mental methods of subtraction. More strategies for subtracting numbers are introduced, including subtracting round the thousands boundary. The standard written method should be used, with crossing both the hundreds and tens boundaries.
Tricky set of in-out tables to complete. Decide whether to add or subtract.
Time for something different: true or false?
Adding and subtracting numbers that cross the thousands boundary: often ‘counting on’ is the best method.
Add twenty and take one is much quicker than trying to add nineteen. But not always!
In these questions, you are told one fact about a sum. Write down three others without doing any more calculating.
Given one fact helps with working out similar facts.
Helping to decide whether it is best to work out the answer in your head or on paper.
Use the numbers in the octagon to create and answer subtraction questions using multiples of 10 and decimals.
Pencil and paper method for subtracting crossing the tens boundary.
Be careful with these subtraction questions when setting them out on paper.
Remember to keep the decimal point in line when practising these subtraction of money questions.
A set of word problems which can all be answered by using the standard method of subtraction.
Achieve success with those tricky subtractions with zeros in!
Nice neat rows of subtraction questions. Some children just love doing lots of these!
A quick look at methods of written subtraction.