Mathematics

Grade 3 maths: hundreds, kilograms, grams

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 1.1 ป.3/5

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
7 × 8 = ?
- 56
- 64
- 48
Read the explanation
Seven times eight makes fifty-six.
02
450 + 275 = ?
- 625
- 725
- 825
Read the explanation
Five plus five is ten, carry one; five plus seven plus one is thirteen, carry one; four plus two plus one is seven.
03
What is 1/4 of 20?
- 6
- 4
- 5
Read the explanation
A quarter means four equal parts and taking one: twenty divided by four is five.

Before you play

Game teaching guide

What children will practise

Review three-digit addition and subtraction with carrying and borrowing (indicator ค 1.1 ป.3/5), the 7 and 8 tables with matching division, a quarter of a number, and converting kilograms to grams (ค 2.1 ป.3/9).

What's in the worksheet

6 multiple-choice questions - 7 × 8 = 56 and 56 ÷ 7 = 8 - 450 + 275 = 725 with two carries - 600 - 245 = 355 borrowing across zeros - 1/4 of 20 is 5 - 3 kilograms is 3000 grams; distractors 300 and 30000

How to use it in class

Use as pre-test review, about 8 minutes, team mode so pupils explain their methods to each other. - Q1 and Q6 use the same numbers 7, 8 and 56; after revealing, show that multiplication and division are partners - For 600 - 245, count on from 245 to 300, then to 600 - For kilograms, hold up a 1 kg bag of sugar and show 1000 g on the label - Play it linked to the class to record results in the mark book

Common sticking points

- Choosing 365 or 345 for 600 - 245 after slipping while borrowing across two zeros. Count on, or check with 355 + 245 - Choosing 625 for 450 + 275 by dropping the second carry into the hundreds - Choosing 300 for 3 kg, remembering 1 kg as 100 g by mixing it up with metres and centimetres