Mathematics
Intermediate
50 mins
Teacher/Student led
+55 XP
What you need:
IWB/Projector/Large Screen

Mixed-operation Problem Solving: Which Operation?

Learn to read a story problem and pick the right operation—add, take away, times, or share—by spotting the action words. Write number sentences that match each story.

Teacher Class Feed

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    1 - Getting Started ~4 mins

    Key point

    Illustration for Getting StartedIs this a story where we add, take away, times, or share? What word or picture in the story told you?

    Here is a story: a camogie club has 6 teams, and every team has 4 players. How many players are there in all?

    You do not have to work out the answer yet. Just this: is this a story where we add, take away, times, or share? What word or picture in the story told you?

    2 - Watch and Notice ~11 mins

    We will read five short stories together. In each one, listen for the action in the story that tells us which operation to reach for, words like altogether, left, equal groups or shared. Watch the last story closely: it needs more than one step.

    Key point

    Notice how the numbers can be big, but it is the action in the story that tells us which operation to reach for, words like altogether, left, equal groups or shared, and sometimes a story asks for more than one step.

    3 - Try It Together ~8 mins

    We work through four stories together, one at a time. For each one: read it, find the action word, name the operation, then write the number sentence. Check each answer before moving on.

    Which operation? Four stories

    4 - Write It in Your Copy ~4 mins

    COPYBOOK MOMENT

    In your maths copy, choose one of the problems we worked on the board. Write the operation you chose, the number sentence, and the answer as a full sentence with its units.

    For example: Operation: adding. 35 + 28 = 63. The team scored 63 points altogether.

    5 - Class Challenge ~9 mins

    Five stories for today's challenge, from easiest to trickiest. For each one, name the operation and write the number sentence, then check it before the next. The last story needs two steps.

    Class challenge: five stories

    Pupil practice
    Module 2 · The Four Operations: Mental and Written Number
    Lesson 28 · Mixed-operation Problem Solving: Which Operation?
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