# Order of Operations with 'RoboOps'

**MATHEMATICS SKILL COVERED**

Age 9-12

Order of operations:

- Addition and subtraction
- All four operations
- Including brackets

**HOW TO PLAY**

Use your division, multiplication, addition and subtraction - essential skills for BIDMAS, the order of operations to save the Roborators.

*Professor BIDMAS has taken over the Roborators, forcing them to destroy the air purification machine. As a computer security expert, we can save the Roborators by decrypting the key above their heads.*

Use the keypad on the computer panel to answer the question.

Use more powerful CPU cycles to rescue the Roborators quicker.

Click on a Roborator to magnify the decryption key.

Answer as many questions as possible within the time limit.

**SCORING INFORMATION**

For each level, beat the target score to earn a medal (**B**ronze, **S**ilver, **G**old)

**Target score****>>>**3000-5999 points (**B**), 6000-8999 points (**S**), 9000+ points (**G**)

**Scoring calculation**

The score is calculated as follows:

BASE SCORES

- 10 points per correct answer
- 20 points per correct answer
- 40 points per correct answer
- 80 points per correct answer
- 160 points per correct answer

DIFFICULTY MULTIPLIER: The multiplier is located in the top UI of the game. Players move up a difficulty by getting 3 correct and move down a difficulty by getting 2 incorrect.

DISTANCE: Points are awarded for the distance a robot has travelled. Robots travel from the right to the left of the screen. The greater the distance they travel the more points they gain, up to a maximum of 100 points.

BONUSES: For the three most difficult robots (monocycle, spider and tank), you get a bonus 3,000 points for the first time you answer a question for a robot of that type. That means if you encounter all robot types in a stage and answer at least one question for each of them, you get an extra 9,000 points in bonuses.