Basic Strategies

Don't let Roborators get too close. The further away they are when you blast them, the more cash you earn: a "Far" Roborator is worth 4 times more than a "Near" one.

Combos can boost your score quickly. Focus on getting as many consecutive correct answers as possible. Combo x 9 gives you the maximum bonus and brings on the next Roborator class.

Higher-class Roborators are worth more money and earn more experience points per hit. Try to get to the red Roborators as quickly as possible, with as many lives to spare as possible.

Your ComboCounter gets reset if you enter an incorrect answer or lose a life. You have four Lives that get replenished at the end of the stage. It is often worth risking a life or two to get the extra few seconds to work out the right answer.

Weapons

Save the best weapons for the toughest Roborators:

MemoRay

This the most valuable weapon, as any Roborators destroyed using it count towards both the dollar value and experience points earned for clearing the stage. Use it when there are multiple Roborators on the screen to maximize its value.

Rocket Launchers

In multi-annihilation mode this destroys two Roborators with one answer, but does not provide additional experience points. It has a max ammo limit of 50 rockets, so keep an eye on your rocket inventory.

Grenades

These are very powerful, as they clear all Roborators on-screen. However, like the ElectroWall, it does not contribute towards cash earned or experience points. Use them wisely!

Math Strategies

In each stage the math gets tougher and tougher, so here are some expert survival tips!

Training Ground

Try to use "number bonds" that make 10. For example: 14 + 26. Notice that 4 and 6 always go together to make an extra 10.

When adding numbers together, try to add the tens together and then the units. For example: 14 + 15. Do 10 + 10 = 20, then 4 + 5 = 9. So the answer is 29.

Robo Barracks

When subtracting, it is sometimes easier to ‘add on’. For example, 27 − 19. How many do you add onto 19 to make 27? Answer: 8. This might be easier than taking 19 away from 27.

Assembly Line

Anything multiplied by zero always makes zero.

Multiplying by 2 is the same as doubling.

Multiplying by 3 is the same as trebling.

Multiplying by 4 is the same as doubling and then doubling again.

To multiply by 10, just add a zero to the end of your number.

Multiplying by 5 is the same as multiplying by 10 and then halving.

When you multiply by a number close to 10 try using this strategy: Let’s calculate 9 × 8, for example. Do 10 × 8 = 80. Then subtract 8 to make 9 lots of 8. Answer: 72.

Weapons Store

It's sometime useful to think of dividing in terms of multiplication. For example, 15 divided by 5 is the number that you have to multiply 5 by to get 15. The answer is 3 because 3 × 5 = 15.

Prof's Lab

When a number is very close to 100 you might use the method of 'borrowing'. Take 78 + 97, for example. You only need 3 extra to make 97 into 100. So you 'borrow' 3 from 78. So the question is now the much easier 75 + 100. Answer: 175.

When you multiply numbers that end in zero you can ignore the zero to begin with. For example, 12 × 20. Work it out as 12 × 2 to make 24. Then add an extra zero to make 240.

When you divide numbers that end in zero you can ignore the zeros. For example, 120 ÷ 20 gives the same answer as 12 ÷ 2.