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A report out this morning questions the value of brain training games! We will explore why the perfect puzzle might not have the desired effect.

There are of course those who swear by a bit of mental gymnastics. Before you choke on your Sudoku have a go at this one. We will have the answer up on Thursday's blog.

Maths and Algebra Test
See if you can work out the answer to these simple sums and algebraic equations in your head - that means no calculators or writing down on paper!

a) 375 + 486
b) (52 x 8) - 47

c) (169 / 13) + (12.25 x 4)
d) 2x + 10 = 20. What is the value of x?
e) 4x - x + 12 = 48. What is the value of x?

Spelling Test
Now for the word challenge. Are these spellings correct, and if not, spell the word correctly:

a) seperately
b) concatenation
c) equillibrium
d) phlegm
e) reciever

UPDATE : So here are the answers. Our expert did it in 45 seconds - how did you do?

Maths Test
a) 861
b) 369
c) 62
d) X = 5
e) X = 12

Spelling Test
a) separately
b) concatenation
c) equilibrium
d) phlegm
e) receiver