How to subtract numbers
To subtract numbers from each other you can use a variety of written methods such as the column method, or a number line; or you could use a mental arithmetic method.
Resources for physically subtracting numbers together could include: an abacus, a 100 square, Cuisinaire rods, Numicon, Base 10 or simply use cubes or counters.
Try using more than one method and practice checking your answers with a calculator.
Government guidelines (Year 2)
Pupils should be taught to:
Solve problems with addition and
subtraction:Using concrete objects and pictorial representations, including those involving numbers, quantities and measures
Recall and use addition and subtraction facts to 20 fluently, and derive and use related facts up to 100
Add and subtract numbers using concrete objects, pictorial representations, and mentally, including:
A two-digit number and ones
A two-digit number and tens
Two two-digit numbers
Adding three one-digit numbers
Show that addition of two numbers can be done in any order (commutative) and subtraction of one number from another cannot
Recognise and use the inverse relationship between addition and subtraction and use this to check calculations and solve missing number problems.
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Subtraction worksheets - Year 2 Primary maths resources, activities and worksheets
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Subtracting 1-digit numbers,
from numbers up to 100