Mathematics

Change from larger amounts

An AR classroom game for Grade 3. 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 2.1 ป.3/1

Play Host 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.

01
Something costs 128 baht and you pay with 200. How much change?
- 72
- 82
- 62
Read the explanation
Two hundred take away one hundred and twenty-eight leaves seventy-two.
02
Two items at 45 baht each - how much altogether?
- 80
- 90
- 95
Read the explanation
Forty-five times two makes ninety.
03
You have 500 baht and spend 275. How much is left?
- 235
- 215
- 225
Read the explanation
Five hundred take away two hundred and seventy-five leaves two hundred and twenty-five.

Before you play

Game teaching guide

What children will practise

Solve money problems (indicator ค 2.1 ป.3/1) with amounts into the hundreds: giving change, totalling several items, saving over several weeks, including two-step problems.

What's in the worksheet

6 multiple-choice questions - Pay 200 baht for a 128-baht item: 72 change - Have 500 baht, spend 275: 225 left - Three 100-baht notes make 300 baht; distractor 103 - Three snacks at 12 baht paid with 50: 14 change - Save 50 baht a week for 4 weeks: 200 baht

How to use it in class

Use in the P3 money unit, about 8 minutes, team mode with play notes and coins for each team. - For 200 - 128, have teams count up like a shopkeeper: 128 to 130, then to 200 - Three snacks is a two-step problem; teams write step one (36 baht) before finding the change - Play it linked to the class to record results in the mark book

Common sticking points

- Choosing 82 or 62 for 200 - 128 after slipping while borrowing across a zero. Count up instead - For three snacks, choosing 24, or stopping at 36 (not an option) and guessing - Choosing 235 or 215 for 500 - 275 after a borrowing slip. Check with 225 + 275