General Statements about Numbers

General Statements about Numbers

Math lesson Grade 5

Open Ended

Look at the sum of these numbers

8+8=16

What statements can you make?

What is General Statements?

General statements about numbers are used to state whether the sum/difference of a number is equal to the total of the number being added/subtracted/multiplied/divided. For example:

3 (odd) + 6 (even) = 9 (odd)

Here, we know that the sum of one even and odd number is equal to an odd number. We also know that the total of the sum is equal to the total of the number being added.

Multiple Choice

Which of these options are correct?

• Even + Even = Odd

• Odd + Odd = Even

• Even - Odd = Even

• Odd - Odd = Odd

Answer

From the question before, we know that the correct answer is the Odd + Odd = Even. To identify the correct statement, we can write an example:

9+7=16
9+9=18
5+7=12

Open Ended

Kayla state the example below:

9+8=17

She said that an odd number added with an even number is equal to an odd number. Is she true? Explain in 3 minutes.

Poll

Which of these is true?

• The double of any number is even.

• The double of any number is odd.

• The half of any number is odd.

Negative numbers/integers

We can also use negative numbers/integers in general statements.

How to use negative numbers/integers in general statements?

We can also use negative numbers/integers to state our general statement for any addition/subtraction/multiplication/division. For example:

-5 + 6 = 1 (odd)

Thank you

Slide by Farzan