4. Calculate following equations with correct significant figures.
(a) `0.31 +0.011`
(b) `0.001- 0.50`
(c) `4.11 times 10^(5) + 3.0 times 10^(6)`
(d) `1.30 times 10^(-7) -1.00 times 10^(-8)`
4. Calculate following equations with correct significant figures.
(a) 0.31 +0.011
(b) 0.001- 0.50
(c) 4.11 times 10^(5) + 3.0 times 10^(6)
(d) 1.30 times 10^(-7) -1.00 times 10^(-8) (a) `0.32`
(b) `-0.5`
(c) `3.4 times 10^6`
(d)`1.20 times 10^(-7)`
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