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Mathematics Class 6, Unit 3
Integers
Numbers below zero · The number line · Uses in daily life
What we will be able to do
➖
Write the answer when a bigger number is subtracted from a smaller one
🔢
Recognise the set of integers Z
📏
Place integers on the number line
⚖️
Compare two integers and put them in order
On the number line
How to work out \( 2 - 3 \)
STAND
Stand on 2 on the number line.
MOVE
Since it is a subtraction, move 3 units to the left.
COUNT
The steps go 1, then 0, then past zero.
WRITE
The landing place is -1, so \( 2 - 3 = -1 \).
Presenter notes: Today we learn how numbers below zero come about and how we write them.