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# Missing

#### Numbers have gone missing. Only a math sleuth can find them.

## Object of the Game

## How to Play

## Example

##### That was easy, right? So now it’s time to dive in and go “missing” for awhile.

#### Author: admin

https://www.arithmo.com
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**Equas** between 13 and 24 **CANNOT** be made when you calculate any three adjacent number combinations. Your goal is to figure out which are the missing Equas.

- Select a 2×2, 2×3, or 3×3 grid size.
**Missing**is a process of elimination. Since you do not know which Equas are missing, you will have to make calculations to find all of the Equas between 13 and 24 that do exist, before you can find the ones that don’t.- In this puzzle, adjacent numbers are three numbers connected
**vertically, horizontally or in an “L”****shape**, as shown in the diagrams below:

**Missing**is very similar to all the other Arithmo games in that it uses the basic math functions:*addition, subtraction, multiplication, and division*.- Follow the order of operations when necessary.

Find which Equas, from 13 to 24, are missing on the grid.

As you can see, we can make the following equations using the following connections:

**Equa-13** 11+(8:4)=13, **Equa-14** 8+5+1=14, **Equa-15** 8+8-1=15, **Equa-16** 8×8:4=16, **Equa-17** 8+8+1=17, **Equa-18** 5+5+8=18, **Equa-20** 4+8+8=20, **Equa-21** 8+8+5=21, **Equa-22** 11×8:4=22, **Equa-23** 11+8+4=23, **Equa-24** 8x(8-5)=24

However, Equa-19 cannot be found on this grid. No matter which three adjacent numbers you connect, you will never be able to make them equal 19.

**The solution for this puzzle is that only one Equa is missing, and that is Equa-19.**

Arithmo Basic Rules:

- To find or insert in a grid three adjacent numbers that when calculated together result in an
**Equa-X.** **Equa and Equa-X**are terms that simply mean the result of a mathematical equation. For example: 2 x 4 -1 = 7**(Equa-7)**- In Arithmo, an equation is made by connecting three adjacent numbers in a grid.
- There are five types of puzzle grid shapes: Circle, Hexagon, Rhombus, Square, Triangle. Each game has a diagram illustrating how connections should be made in its specific grid.
- Numbers are calculated together using only addition, subtraction, multiplication and division,
*with or without parenthesis.*

If a combination of arithmetic functions is used than keep in mind the following order of operations you learned in math class:

Rule 1: *First perform any calculations inside parentheses, if they exist.*

Rule 2: *Next perform all multiplications and divisions*

Rule 3: *Lastly, perform all additions and subtractions*

The order of operation rules are demonstrated in the examples shown below:

(8 – 5) x 7 = 21 (**Equa-****21**)

8 x 12 ÷ 6 = 16 (**Equa-****16**)

6 x 3 + 5 = 23 (**Equa-23**)

11 + 12 ÷ 4 = 14 (**Equa-14**)

Each Arithmo puzzle employs the basic rules, but it will also have its own set of specific rules. Please read all the rules carefully for maximum benefit and enjoyment.