It's much easier to add 10 to 25, then add the 4. Let’s take a look at subtraction now. Subtraction is where we know the whole and only one of the parts. So this question 12 – 5 ...

A singular noun is a noun referring to just one person or thing, for example 'cat'. When you want to show that something belongs to that person or thing, you add a possessive apostrophe and an 's ...

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