BIDMASter app for iPhone and iPad

Reveal the hidden numbers and symbols to equal the target number.

Swipe numbers and symbols into the correct order then tap ‘=’ to check your answer.

Your choices are coloured to give you clues for your next attempt.

GOLD in the right place

GREEN needs moving

GREY not needed

Now plan your next guess:

Flick away the grey ones and drag the green ones to a new position.

You can even slide a new character on top of an old one.

Take care to follow the rules for the order of operations:

( 3 + 2 ) x 5 = 25 Brackets, or parentheses, first

3 + 2 x 5 - 1 = 12 Divide and multiply next

1 - 3 x 4 = -11 Add and subtract last

9 ÷ 3 x 2 = 6 Work from left to right

You can take up to six attempts and then the answer is revealed.

BIDMASter is a great way to work on your arithmetic skills.

And it’s a stimulating and fun way to start a maths lesson.