# Test: Formulae - Normal

Double click on maths expressions to zoom
Question 1:   Find the value of $k$ in the formula: $t=ak$, if $t=3$, $a=9$
$k=\frac{1}{3}$
$k=\frac{1}{6}$
$k=3$
$k=27$
Question 2:   Find the value of $n$ in the following formula: $n=pq$, if $p=7$, $q=-4$
$n=-28$
$n=-26$
$n=3$
$n=-\frac{7}{4}$
Question 3:   Find the value of $v$ in the following formula: $t=\frac{s}{v}+5$, if $s=10$, $t=7$
$v=10$
$v=12$
$v=5$
$v=6\frac{3}{7}$
Question 4:   Rearrange the formula $p=q+r$ to make $r$ a subject
$r=p-q$
$r=\frac{q}{p}$
$r=p+q$
$r=\frac{p}{q}$
Question 5:   Rearrange the formula: $y=\frac{x}{3}$ to make $x$ a subject
$x=y+3$
$x=3y$
$x=\frac{1}{3}y$
$x=y-3$
Question 6:   Rearrange the formula $y=3x+1$ to make $x$ a subject
$x=\frac{y-1}{3}$
$x=3y+1$
$x=3y-1$
$x=\frac{1}{3}y-1$
Question 7:   Rearrange the formula $b=2mx$ to make $x$ a subject
$x=bm+2$
$x=\frac{b}{2m}$
$x=2bm$
$x=\frac{1}{2}bm$
Question 8:   Rearrange the formula $n=\frac{p+q}{2}$ to make $q$ a subject
$q=\frac{n-p}{2}$
$q=\frac{1}{2}n-p$
$q=2n-p$
$q=2n+p$
Question 9:   Rearrange the formula $r=2p+aq$ to make $a$ a subject
$a=r+2\frac{r}{q}$
$a=\frac{p-r}{2q}$
$a=r-\frac{2p}{q}$
$a=\frac{r-2p}{q}$
Question 10:   Rearrange the formula $ax+p=xp-a$ to make $a$ a subject
$a=\frac{p\left(x-1\right)}{x+1}$
$a=p\left(x-1\right)\left(x+1\right)$
$a=\frac{p-px}{x+1}$
$a=\frac{px-1}{x+1}$