My 9 year old son has been set some maths for the half term. It involves using brackets to obtain different answers using the same set of numbers. He's struggling with them and I'm baffled!
One q is : insert as many brackets as you need to make this calc. total 100 with both calculators:-
4 + 1 x 8 + 3 - 6 x 3 x 2 - 2
Please can someone tell me what is meant by both calculators and what is the method used to solve this sort of problem? We've tried all manner of combinations and failed to reach 100.
Son says he was given this by a supply teacher on the day they broke up and was given no advice on what to do other that the acronym BIDMAS.
I'd appreciate any enlightenment please!!
( 4 + 1 ) x ( 8 + 3 - 6 ) x ((3 x 2) - 2)
Isn't it BODMAS but there does seem to be a http://www.mathagonyaunt.co.uk/INTERACTIVE/bidmas/equation.html