Calculate (-2) + (-5) – 6 – (-3)
? -16 ? 0 ? -6 ? -10
Calculate - 4 + -10/-5
? - 2 ? – 6 ? 14/5 ? -14/5
Calculate 4 x 7 + ( 120/3 + 5 - 3 x 7 )
? 82 ? 52 ? 22 ? 124
Express 24.326917 to 3 decimal places
? 24.320 ? 24.326 ? 24.327 ? 24.330
Express 400001.62 to 2 significant figures
? 400000 ? 400001 ? 400002 ? 40
Write 4.613 x
10-8 out in full
? 461300000 ? 0.000004163 ? 0.0000004613 ? 0.00000004613
Write down an expression for S, the amount spent at a group meal, if food cost £12 each and wine cost £8 per bottle and the group bought one bottle between two of them. Let x be the number of people in the group.
? S = 20x ? S = 16x ? S = 12 + 4x ? S = 12x + 4
Simplify 4a/b + b – 3b + 6a/b
? 8 + a/b + b ? 10a/b – 2b ? 10a/2b – 2b ? 2a – 2b /b
Simplify x – 3y –
2x2 + 3x2 + 4y – x
? –y +
x2 ? 2x + y +
x2 ? y +
x2 ? –y –
x2
Simplify 4p/[2(p + q)]
? 2/q ? 2p/(p+q) ? 2/(1+q) ? 2p/q