2.6 Deriving and using formulae

2.6 Deriving and using formulae

Grade 7

Open Ended

Work out the value of the given expression for the given value.

 $a+5\$  when  $a=-10$  

Open Ended

Work out the value of the given expression for the given value.

 $-7m\$  when  $m=-2$  

Open Ended

Work out the value of the given expression for the given value.

 $c+d$  when  $c=5\$  and  $d=-4$  

Open Ended

Work out the value of the given expression for the given value.

 $6b-3$  when  $b=-2$  

Open Ended

Work out the value of the given expression for the given value.

 $5x+y$  when  $z=9$   and  $v=-25$  

Open Ended

Work out the value of the given expression for the given value.

 $\frac{m}{5}-10$  when  $m\ =\ 100$   

Open Ended

Work out the value of the given expression for the given value.

 $a^2+4$  when  $a=3$   

Open Ended

Work out the value of the given expression for the given value.

 $6-y^2$  when  $y=4$   

Open Ended

Work out the value of the given expression for the given value.

 $2d^2+1$  when  $d=5$   

Open Ended

Work out the value of the given expression for the given value.

 $\frac{p^3}{5}$  when  $p=10$