Page 8 - Genius PBD - Mathematics Year 2

Date:
UNIT 2 Addition, Subtraction, Multiplication and Division
Learning Area: Numbers and Operations

Genius Notes There are 750 chicken eggs. 280 pieces have
been sold. How many chicken eggs are left?

1. The addition operation is the sum of two or 2. The subtraction operation is to find the
more numbers. difference between two numbers.

Example: Example:
Add from right to left Subtract from right to left

hundreds tens ones hundreds tens ones
1 8 12 12
1 7 4 9 3 2
+ 3 5 5 – 7 8
5 2 9 8 5 4

Key words: Key words:
Total, add Difference, left, subtract, balance

3. The multiplication operation is a repeated 4. The division operation is collecting and
addition of a number. dividing a number equally.
Example: Example:
9 × 4 = 36 6
[4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = 36] 7 4 3
4 × 9 = 36 – 4 2
[9 + 9 + 9 + 9 = 36] 1 remainder
Therefore, 9 × 4 = 4 × 9 = 36
Therefore, 43 ÷ 7 = 6 remainder 1

Key words: Key words:
Multiply, times Shared, divided

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