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’.
Mental addition and subtraction of 2-digit numbers. These are about as hard as you would expect to get without using written methods.
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.
Problems in words. Not too tricky, but ask how they were done as this reveals a great deal about children’s thinking.
More adding and taking away 19, 29 etc. Easy if you know how!
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.
Using the standard written method of subtraction, with regrouping the tens and hundreds.
Written subtraction, regrouping the thousands and hundreds)
More written subtraction of 4-digit numbers.
More Written Subtraction of 4-digit Numbers with zeros.
Solve subtraction word problems. They should be answered by using the standard written method.
Tips on different ways that answers can be checked: essential if you are using a calculator.