The sum of all integers with absolute values greater than 3.7 and not greater than 6 is Observe the following: -1×1/2=-1+1/2，-1/2×1/3=-1/2+1/3，-1/3×1/4=-1/3+1/4，… (1) The rule you find is - 1 / N (n + 1) =; (2) According to the law: (- 1 × 1 / 2) + (- 1 / 2 × 1 / 3) + (- 1 / 3 × 1 / 4) + +（-1/2009×1/2010）.

The sum of all integers with absolute values greater than 3.7 and not greater than 6 is Observe the following: -1×1/2=-1+1/2，-1/2×1/3=-1/2+1/3，-1/3×1/4=-1/3+1/4，… (1) The rule you find is - 1 / N (n + 1) =; (2) According to the law: (- 1 × 1 / 2) + (- 1 / 2 × 1 / 3) + (- 1 / 3 × 1 / 4) + +（-1/2009×1/2010）.

The first problem is 0, because it means - 4 - 5 - 6 4 5 6, so it is 0
The rule in (1) is - 1 / N (n + 1) = - 1 / N + 1 / (n + 1)
(2) According to the law of (1), the answer is - 1 + 1 / 2010 = - 2009 / 2010

How many integers have absolute value less than 3? Are they?

-3,-2,-1,0,1,2,3

Integers with absolute values not greater than 3.1 have ()
A. Four B. five C. six D. seven

There are 7 integers with absolute value no more than 3.1: ± 1, ± 2, ± 3 and 0