A selection of our very best maths resources entirely free, updated each month.
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Subtracting 9 by subtracting 10 and adding 1.
Subtract 99 by subtracting 100 and adding 1.
Addition using the plus and equals signs.
Today we are going to look at what happens when we add two 2-digit numbers that need an exchange.
Today we are going to look at how we can make it as easy as possible to add three 1-digit numbers.
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