Rearranging Formulae

Rearranging Formulae Quiz

Spec 2.3 · Edexcel IGCSE Maths: Quiz

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5 questions, one answer each

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  1. 1. In the formula P=2l+2wP = 2l + 2w, what is the subject?

    • A. PP
    • B. ll
    • C. ww
    • D. 22

  2. 2. Make bb the subject of a=b−5a = b - 5.

    • A. b=a−5b = a - 5
    • B. b=a+5b = a + 5
    • C. b=5−ab = 5 - a
    • D. b=a5b = \dfrac{a}{5}

  3. 3. Make mm the subject of F=maF = ma.

    • A. m=F−am = F - a
    • B. m=Fam = Fa
    • C. m=Fam = \dfrac{F}{a}
    • D. m=aFm = \dfrac{a}{F}

  4. 4. Rearrange py+q=ry+spy + q = ry + s to make yy the subject.

    • A. y=s−qp−ry = \dfrac{s - q}{p - r}
    • B. y=s+qp+ry = \dfrac{s + q}{p + r}
    • C. y=q−sp−ry = \dfrac{q - s}{p - r}
    • D. y=s−q+p−ry = s - q + p - r

  5. 5. Make xx the subject of w=x2+1w = \sqrt{\dfrac{x}{2}} + 1.

    • A. x=2(w−1)2x = 2(w - 1)^2
    • B. x=2(w+1)2x = 2(w + 1)^2
    • C. x=(w−1)2−2x = (w-1)^2 - 2
    • D. x=2w2−1x = 2w^2 - 1

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