Understand Integers

:integers

Mathematics - Primary 6

Mr Rolandi

Learning Goals

By the end of this lesson, you should:

• be able to do basic operations involving positive and negative integers

• be able to determine the concept of integers used in daily life

​

Multiple Choice

What is 5 less than 2?

• 7

• -7

• 3

• -3

​Add.
-2 + 3 = ...

Subtract.
-2 - 6 = ...

Multiple Choice

Add.
- 9 + 5 = ?

• 4

• -14

• 14

• -4

Multiple Choice

The temperature in London before was 1 degree Celsius below zero.
Now it decreases by 5 degree Celsius.
What is the temperature in London now?

• 4 degree Celsius

• -4 degree Celsius

• 6 degree Celsius

• -6 degree Celsius

He told me to stop talking

(negative)

We can identify the word "STOP" has turned the sentence into a negative sentence.

What will happen if we add another negative-meaning word into that sentence above?

He told me to don't stop talking

(negative) x (negative)

What will happen if we add another negative-meaning word into that sentence above?

When there are 2 negative-meaning words in one sentence, they will cancel one another and turn the sentence into a positive sentence

Multiple Choice

Multiply.
5 x (-2) = ?

• 10

• -10

• -3

• 3

Multiple Choice

What is the quotient when (-32) is divided by (-4)?

• 28

• -28

• 8

• -8

Multiple Choice

5 - 6 + 3 x (-2) = ?

• -4

• 8

• -7

• 5

Where can we find the integers?

• Temperatures

• Loss/Profit

• debit/credit money

• height/depth of places

• etc

Learning Goals

By the end of this lesson, you should:

• be able to do basic operations involving positive and negative integers

• be able to determine the concept of integers used in daily life

Poll

How far you have understood today's lesson?

• I am still confused

• I think I got it, but I need more review

• I am good and ready for the next step