Seven Up!
Can you put the numbers 1, 2, 3, 4, 5, 6 and 7 into the circles so that the straight lines of 3 numbers all add up to the same total.
Would it be possible for any other seven consecutive(BWA! – big word alert!) numbers.
For example 12, 13, 14, 15, 16, 17 and 18.
I think it is 10 i put 7 in the middle and 3 in the lines 3 +7= 10
I think it is 12! I put 7 in the middle and 5 on the lines. 7+5=12!
The middle number is one because it is the smallest so the answer is ten.
Try this:
Place 7 in the middle to start. Then you still have 1, 2, 3, 4, 5, 6 so arrange those around the outside so that all straight lines of three numbers add up to the same value.
Olivia
It’s 14 mr hastey. I put 7 in the middle and then made the other numbers in the lines add to 7.. 7+7 is 14
Mr Hastey
Great work Olivia. I was very impressed with the work you brought in showing your investigation into if it could be done for other consecutive numbers and the column addition you used in the process.