Always, Sometimes or Never?
Are the following statements always true, sometimes true or never true?
You could cut out the statement cards and arrange them in this grid.
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When you add two even numbers together the answer is even |
When you add two odd numbers together the answer is odd |
If you add an even number to an odd number the answer is even |
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When you multiply by an odd number the answer is odd |
When you multiply by an even number the answer is even |
Doubling a number results in an even number |
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When you multiply a number by itself the answer is even |
The sum of four even numbers is divisible by four |
Adding three consecutive numbers results in an even number |
Can you find examples or counter-examples for each one?
For the “sometimes” cards, can you explain when they are true? Or rewrite them so that they are always true or never true?
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