Here is a sentence: Aoife has some sweets, and then she gets 5 more.
We do not know how many sweets Aoife started with. Instead of writing a number we do not know, we can use a letter. If we call her starting number t, how could we write in symbols what she has now?
Watch four word situations turn into expressions on the board. In each one, look for the word that tells us which operation to use.
In the next one something is taken away, so watch which number we start from, because with subtracting the order changes the answer.
Then comes a shopping situation where the same item is bought again and again, and that repeating is what points us to an operation.
The last one shares an amount out fairly between people, so ask yourself what each person ends up with.
Today we build expressions together, one at a time. Name the operation word before we write the symbols. We will work through these situations:
In your maths copy, write each of these word situations and its expression side by side, one under the other. Circle the operation word that gave you the sign.
Today we work through these, each one a step harder:
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