Questions
 Use tables to find;

 4.978^{2}
 The reciprocal of 31.65
 Hence evaluate to 4.S.F the value of
4.978^{2} – ^{1}/_{31.65}

 Use tables of squares, square roots and reciprocals to evaluate correct to 4 s.f
 Without using mathematical tables or calculator, evaluate:
giving your answer in standard form
Answers


 24.78
 0.0316
 24.78 – 0.0316 = 24.75

3 x 8.575 – 2 x 0.07224
= 25.725  0.14448
= 25.58052
= 25.58
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