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Multiplying and dividing fractions

Mathematics

Multiplying and dividing fractions

An AR classroom game for Grade 6. Learners can aim with their hands at the camera or play by tapping the screen.

This set has 6 questions in an interactive multiple choice activity.

Curriculum indicatorค 1.1 ป.6/3

PlayHost a classroom

A look before you play

Sample questions

A few real prompts from the game to help you choose an activity for your class.

  1. 1/2 × 1/3 = ?

    • 1/6
    • 2/5
    • 1/5
    Read the explanation

    Multiply top by top and bottom by bottom: one times one is one, two times three is six.

  2. 2/3 × 3/4 = ?

    • 6/7
    • 1/2
    • 5/7
    Read the explanation

    Two times three is six, three times four is twelve - which simplifies to a half.

  3. 1/2 ÷ 1/4 = ?

    • 1/2
    • 1/8
    • 2
    Read the explanation

    Dividing by a fraction means multiplying by its reciprocal: one half times four is two.

Before you play

Game teaching guide

What children will practise

Multiply fractions by fractions and by whole numbers, divide fractions by multiplying by the reciprocal, and simplify answers, the groundwork for ค 1.1 ป.6/7.

What's in the worksheet

6 questions, multiple choice with 3 options - 1/2 × 1/3 (1/6) - 2/3 × 3/4 (1/2) - 1/2 ÷ 1/4 (2) - 3/4 × 4 (3) - 2/5 ÷ 2 (1/5)

How to use it in class

Use after teaching fraction multiplication and division; about 5-6 minutes. - Play solo, then explain Q3 with a picture: how many quarters fit in a half? - If many miss Q2, cancel the 3s before multiplying - For Q4 and Q5, read them as 3/4 of 4 and 1/3 of 9 - For Q6, accept both 1/5 and 2/10. They are equivalent although the game accepts only simplest form - Play it linked to the class to record results in the mark book.

Common sticking points

- Q1: adding instead of multiplying gives 2/5 - Q3: multiplying without flipping gives 1/8 - Q2: getting 6/12 and not simplifying, or adding to get 5/7 - Q6: choosing 4/5 by multiplying by 2 instead of dividing

Play together first, then build on it with a worksheet for the same level.

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