WorksheetsMastering Change of Subject in Equations
Total questions: 10
Worksheet time: 5mins
Rearrange the formula A = πr² to make r the subject.
r = πA
r = A/π
r = 2πA
r = √(A/π)
If F = ma, change the subject to a.
a = F/m
a = F - m
a = F + m
a = m/F
Given the equation C = 2πr, express r in terms of C.
r = 2C / π
r = C / (2π)
r = C / π
r = C / (4π)
From the formula V = lwh, solve for h.
h = V - (lw)
h = V * (lw)
h = V / (lw)
h = V + (lw)
If P = 2(l + w), change the subject to l.
l = P/2 - 2w
l = P - 2w
l = (P/2) - w
l = P/2 + w
Rearrange the equation I = V/R to make V the subject.
V = I * R
V = I / R
V = I + R
V = R - I
From the formula A = P(1 + rt), express t in terms of A, P, and r.
t = P(1 + A/r)
t = ((A/P) - 1) / r
t = A / (P + r)
t = A - Pr
If d = rt, change the subject to r.
r = d/t
r = d + t
r = d * t
r = d - t
Given the equation s = ut + 0.5at², solve for a.
a = (s + ut) / t²
a = (s - ut) / t
a = 2(s - ut) / t²
a = s / (ut + 0.5t²)
Rearrange the formula E = mc² to make m the subject.
m = c²/E
m = E/c²
m = E * c
m = E + c²
