Question

7.05, correct to three significant figures.
14.080, correct to five significant figures.
(Ans.)
(Ans.
(iv)
14.08 =
EXERCISE 4(E)
1. Round off :
(0) 0-07, 0-112, 3.59, 9.489 to the nearest tenths.
(ii) 0-627, 100.479, 0.065 and 0.024 to the nearest hundredths.
(iii) 4.83, 0-86, 451.943 and 9.08 to the nearest whole number.
2. Simplify, and write your answers correct to the nearest hundredths
(1) 18-35 x 1.2
(ii) 62.89 x 0.02
3. Write the number of significant figures (digits) in :
(i) 35.06
(ii) 0.35
(iii) 7.0068
(iv) 19.0
(V) 0.0062
(vi) 42 x 0.6 (vii) 0.08 x 25 (viii) 3-6 + 0.12
4. Write :
(i) 35.869, 0.008426, 4.952 and 382.7 correct to three significant figures.
(ii) 60-974, 2.8753, 0.001789 and 400.04 correct to four significant figures.
(iii) 14.29462, 19-2, 46356-82 and 69 correct to five significant figures.
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Answer 1

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