Week beginning August13th - Year 3 to 6
I have fifteen cards numbered 1− 15.
I put down seven of them on the table in a row.
What are my cards?
Can you find any other solutions?
How do you know you've found all the different solutions?
To help understand the question, label the cards A-G:
Use a table to list what the cards need to total and record every combination possible. The Commutative Law of Addition says that 1 + 14 = 14 + 1, so remember that every option can be reversed. Note any observations as you go.
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