### Part 1

### Creating a formula in a Number brick

Tags are also very useful for setting formulas in a brick number.

Go to the editing studio of your form:

- In the
**Measurements section**(section 2)**,**duplicate brick 2.1 "Engine power**"**by pressing the ... to the right of the brick - Rename brick 2.1 to "La puissance du moteur est ..." and brick 2.2 to "Engine power 2" to distinguish between the 2 engines.
**To name the bricks, write in "Title" within the parameters of the brick.** - Drag and drop a new
**Number**brick after the two motor power bricks. - Call this brick "Average engine power"
- In this brick, on the parameters section, change the value from
*Number*to*by Formula (fx)* - The all formulaes must begin with
**calc(** - Add a new parenthesis just after the first one
- Copy the tag from brick 2.1 and paste it after the parenthesis
- Add the mathematical symbol +
- Copy the tag from brick 2.2 and paste it in after the +, then close the parenthesis
- Add the divided symbol "/" and the value "2" (/ 2), then close the parenthesis

**The brick will therefore display the average of the powers entered in bricks 2.1 and 2.2**

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