Rearranging Formulas Worksheet
A Grade 9 math worksheet focusing on rearranging algebraic formulas to solve for different variables.
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Rearranging Formulas
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Rearrange each formula to make the specified variable the subject.
1. Rearrange the formula V = IR to make I the subject.
2. Rearrange the formula A = lw to make l the subject.
3. Rearrange the formula P = 2(l + w) to make w the subject.
1. To make 'b' the subject in the formula A = (1/2)bh, you first multiply both sides by 2, then divide both sides by .
2. In the formula F = ma, if you want to find 'a', you need to both sides by 'm'.
3. When rearranging C = 2πr to find 'r', you divide both sides by .
1. Which of the following correctly rearranges the formula D = m/v to make v the subject?
v = D/m
v = mD
v = m/D
v = D - m
2. The formula for the area of a circle is A = πr². To make 'r' the subject, what is the first step?
Divide by π
Take the square root
Multiply by π
Subtract π
1. To make 'x' the subject in y = mx + c, you subtract 'c' first, then divide by 'm'.
True
False
2. The formula for the circumference of a circle is C = πd. Making 'd' the subject results in d = C/π.
True
False
1. Rearrange the formula A = P(1 + rt) to make 't' the subject.
2. Rearrange the formula S = ut + (1/2)at² to make 'a' the subject. (Assume 't' is not zero)
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