what conjecture can you make about the sum of the first 10 positive even numbers?

2 =2 = 1 x 2
2 + 4 = 6 = 2x3
2+4+6 = 12 = 3x4
2+4+6+8 = 20 = 4x5
2+4+6+8+10 = 30= 5x6

- The sum is 9x10
-The sum is 10x10
-The sum is 11x12
- The sum is 10x11

Question

what conjecture can you make about the sum of the first 10 positive even numbers?  

2 =2 = 1 x 2
2 + 4 = 6 = 2x3
2+4+6 = 12 = 3x4
2+4+6+8 = 20 = 4x5
2+4+6+8+10 = 30= 5x6


- The sum is 9x10
-The sum is  10x10
-The sum is 11x12
- The sum is 10x11

anonymous · Answer

Following the pattern... what would we get?

anonymous · Answer

would it be the 10x10?

anonymous · Answer

Does it follow the pattern above? Look carefully at both numbers and tell me why you think so.

anonymous · Answer

o i think it will be 9 x 10 becuase there going up by ones