 # Sum of all integers from 12 to 15 inclusive

<-- Enter start number
<-- Enter end number

What is the sum of all integers from:
12 to 15 inclusive?

## The Inclusive Integer Average formula is below:

 A  = A + B 2

## Plug in A = 12 and B = 15

 A  = 12 + 15 2

 A  = 27 2

A = 13.5

## Inclusive Numbers Count Formula

Count = B - A + 1

15 - 12 + 1
Count = 4

## Inclusive Sum Formula

Inclusive Sum = Inclusive Average × Count of Inclusive Numbers

Inclusive Sum = 13.5 x 4
Inclusive Sum = 54

sum of inclusive integers from 12 to 15 = 13.5 x 4 = 54

### How does the Inclusive Number Word Problems Calculator work?

Free Inclusive Number Word Problems Calculator - Given an integer A and an integer B, this calculates the following inclusive word problem questions:
1) The Average of all numbers inclusive from A to B
2) The Count of all numbers inclusive from A to B
3) The Sum of all numbers inclusive from A to B
This calculator has 2 inputs.

### What 5 formulas are used for the Inclusive Number Word Problems Calculator?

1. Count = B - A + 1
2. Average = (A + B)/2
3. Sum of inclusive integers is the Average of inclusive numbers x Count of Inclusive Numbers

For more math formulas, check out our Formula Dossier

### What 5 concepts are covered in the Inclusive Number Word Problems Calculator?

average
A number expressing the central value of a set
Sum of Values/n
count
determine the total number of a collection of items
inclusive numbers
includes the first and last number and all numbers in between.
sum
the total amount resulting from the addition of two or more numbers, amounts, or items
word problem
Math problems involving a lengthy description and not just math symbols