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Word problems: discount, ratio, speed

Mathematics

Word problems: discount, ratio, speed

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.6/9

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. Something costs 800 baht with 15% off. What is the price?

    • 680
    • 720
    • 620
    Read the explanation

    Fifteen per cent of eight hundred is one hundred and twenty, leaving six hundred and eighty.

  2. A car covers 240 km in 3 hours. What is its average speed?

    • 70
    • 80
    • 90
    Read the explanation

    Two hundred and forty divided by three is eighty kilometres an hour.

  3. 450 baht shared in the ratio 2 : 3 - how much does the first person get?

    • 225
    • 270
    • 180
    Read the explanation

    Five shares in all, so one share is ninety; the first person gets two shares - one hundred and eighty.

Before you play

Game teaching guide

What children will practise

Solve several kinds of word problem: percentage discounts (ค 1.1 ป.6/12), average speed, sharing in a ratio (ค 1.1 ป.6/11), cube volume, the mean and average price per item.

What's in the worksheet

6 questions, multiple choice with 3 options - 800 baht with 15% off (680) - 240 km in 3 hours: average speed (80) - 450 baht shared 2 : 3: first share (180) - Mean of 15, 20, 25 and 20 (20) - 3 items costing 285 baht: average price (95)

How to use it in class

Use as a word-problem game before a test; about 6-8 minutes. - Play in teams and have them underline what the question asks before working - For Q1, split 15% into 10% + 5% of 800 (80 + 40) - If many miss Q3, draw a 5-part bar and shade 2 parts for the first person - Play it linked to the class to record results in the mark book.

Common sticking points

- Q3: halving 450 to 225, which is offered, or giving the second share, 270 - Q1: stopping at the 120-baht discount, or getting 15% wrong and choosing 720 - Q5: dividing by 3 although there are 4 values - Q6: a slip dividing 285 by 3 gives 85 or 105

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

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