28
The number halfway between 7 and 31 is 19.
halfway between 31 and 37 is (31 + 37) / 2 = 68 / 2 = 34.
22(13+31)/2
17, 19, 23, 29, and 31
28
The number halfway between 7 and 31 is 19.
24 It is 7 more than 17 and 7 less than 31 To find a halfway point (which is also the average), add the numbers together and divide by 2.
it is: 22
halfway between 31 and 37 is (31 + 37) / 2 = 68 / 2 = 34.
Halfway between 31 and 32 is 31.5 (thirty-one and a half).
22(13+31)/2
17, 19, 23, 29, and 31
22
51 = 3 x 17
17, 19, 23, 29, and 31
7 11 13 17 19 23 29.