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Find at least one way to put in some operation signs (+ - x ÷) to make these digits come to 100.

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Always, Sometimes or Never? Number

Stage: 2 Challenge Level: Challenge Level:1

Are the following statements always true, sometimes true or never true?

How do you know?


 

What about these more complex statements?

 
 
You could cut out the cards from this sheet (wordpdf) and arrange them in this grid.

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?