Formula Practice T Madas Pauls age equals Nicks

Formula Practice © T Madas

Paul’s age equals Nick’s age, plus 4 P=N+4 Jim’s age equals Maria’s age, times 2 J=M x 2 J = 2 M Marc’s age equals his dad’s age, divided by 3 M=d ÷ 3 © T Madas

The total cost of books if they are £ 4 each c=bx 4 c = 4 b The total weight of boxes weighing 5 kg each t=5 xb The share when the prize money is divided equally between 4 people s=p÷ 4 t = 5 b © T Madas

The total video recording time of 3 cartoons lasting c minutes each and a soap lasting 55 minutes t = 3 x c + 55 t = 3 c + 55 The total video recording time of 4 documentaries at d minutes each and a film lasting f minutes t=4 xd+f t = 4 d + f © T Madas

The total cost of 7 sweets at s pence each and 2 drinks at d pence each c=7 xs+2 xd c = 7 s + 2 d The total cost of s sweets at p pence each and d drinks at 50 pence each c = s x p + d x 50 c = sp + 50 d © T Madas

Practice on Writing Formulae © T Madas

The cost of 3 drinks at s pence each c=3 xs c = 3 s The cost of 5 drinks at s pence each c=5 xs c = 5 s The cost of n drinks at 40 pence each c = n x 40 c = 40 n The cost of n drinks at 50 pence each c = n x 50 c = 50 n The cost of n drinks at s pence each c=nxs c = ns © T Madas

The cost of 2 pens at s pence each c=2 xs c = 2 s The cost of 7 pens at s pence each c=7 xs c = 7 s The cost of n pens at 30 pence each c = n x 30 c = 30 n The cost of n pens at 50 pence each c = n x 50 c = 50 n The cost of n pens at s pence each c=nxs c = ns © T Madas

The cost C, of n pencils at 30 pence each c = n x 30 c = 30 n The recording time on a video T, of 3 films, each f minutes long T=3 xf T = 3 f The length of a traffic jam L, of 30 cars each m metres long L = 30 x m L = 30 m The total cost C, of 3 pens at r pence each and 2 pencils at s pence each C=3 xr +2 xs C = 3 r + 2 s © T Madas

The cost C, of n books at £ 5 each c = 5 n c=nx 5 The recording time on a video T, of 3 cartoons, each c minutes long T=3 xc T = 3 c The length of a traffic jam L, of 10 cars each m metres long L = 10 x m L = 10 m The total cost C, of 2 pens at r pence each and 5 pencils at s pence each C=2 xr+5 xs C = 2 r + 5 s © T Madas

Quick Test on Writing Formulae © T Madas

The cost of 3 drinks at s pence each c=3 xs c = 3 s The cost of 5 drinks at s pence each c=5 xs c = 5 s The cost of n drinks at 40 pence each c = n x 40 c = 40 n The cost of n drinks at 50 pence each c = n x 50 c = 50 n The cost of n drinks at s pence each c=nxs c = ns © T Madas

The cost of 2 pens at s pence each c=2 xs c = 2 s The cost of 7 pens at s pence each c=7 xs c = 7 s The cost of n pens at 30 pence each c = n x 30 c = 30 n The cost of n pens at 50 pence each c = n x 50 c = 50 n The cost of n pens at s pence each c=nxs c = ns © T Madas

The cost C, of n pencils at 30 pence each c = n x 30 c = 30 n The recording time on a video T, of 3 films, each f minutes long T=3 xf T = 3 f The length of a traffic jam L, of 30 cars each m metres long L = 30 x m L = 30 m The total cost C, of 3 pens at r pence each and 2 pencils at s pence each C=3 xr +2 xs C = 3 r + 2 s © T Madas

The cost C, of n books at £ 5 each c = 5 n c=nx 5 The recording time on a video T, of 3 cartoons, each c minutes long T=3 xc T = 3 c The length of a traffic jam L, of 10 cars each m metres long L = 10 x m L = 10 m The total cost C, of 2 pens at r pence each and 5 pencils at s pence each C=2 xr+5 xs C = 2 r + 5 s © T Madas

© T Madas