Are there any cheats for world maths day?

When i play theres these two people who keep coming against me, they drop back and win by getting 500 points? its so annoying as i only have the chance of coming 3rd and 2nd. they're always there. so there must be a cheat, because its impossible to:

a) score 500 by working out the sum

b)score 500 by not moving ANYWHERE.