Subtraction

Subtracting a single digit from a 3-digit number, starting with multiples of 100.

Subtracting a single digit from a multiple of 1000. Then, moving on to subtracting two numbers just either side of the thousands boundary. They look tricky but are easy if you 'count on'.

More adding and taking away 19, 29 etc. Easy if you know how!

A reminder that subtraction is the inverse of addition, and how this can be useful when working out mental calculations.

Can you say which of these are true and which are false? A quick test of the relationship between addition and subtraction and what effect zero has.

Using bar models to help with addition and subtraction word problems.

Problems in words. Not too tricky, but ask how they were done as this reveals a great deal about children's thinking.

Finding change by counting on.

Use the place value table to help add and subtract.

Using place value grids with addition and subtraction.

Mental addition and subtraction of 2-digit numbers. These are about as hard as you would expect to get without using written methods.

Use the place value chart and counters to help with subtracting 4-digit numbers.

Subtract multiples of 100 from 4-digit numbers with bar models.

Using the standard method to subtract 2-digit numbers.

The standard written method for subtraction. All these are 3-digits take away 2-digits and all cross the tens boundary.

The standard written method for subtraction, crossing the hundreds boundary. Remember that all working out should be shown.

More on the standard written method of subtraction, with zeros in the tens column which can cause difficulties.

More subtraction using the standard written method.

Subtract 4-digit numbers with place value charts with no exchange.

Subtract 4-digit numbers with place value charts with no exchange.

Using the standard written method of subtraction, with exchanging the tens and hundreds.

Written subtraction, exchanging the thousands and hundreds.

More written subtraction of 4-digit numbers.

More written subtraction of 4-digit numbers with zeros.

Using squared paper to set out written subtraction questions.

More written subtraction using squares to set out the question.

Using square paper to set out written subtraction involving money.

Tricky subtraction: missing digits in standard written method of subtraction.

Use bar models to help with subtraction.

Using bar models to help with subtraction. Children choose the most appropriate method, mental or written.

Using bar models to help with word problems and subtraction. Children choose the most appropriate method, mental or written.

Using bar models to help with multi-step problems.

Solve subtraction word problems. They should be answered by using the standard written method.

Follow the instructions carefully to reach the final answer.

Tips on different ways that answers can be checked: essential if you are using a calculator.

More ways of checking answers, including thinking of an equivalent calculation and doing an approximate calculation.

Estimating 3-digit subtraction.

Estimating 4-digit subtraction.