Perform following calculations and express results in scientific notations (exponential notations), i. (1.5 × 10^(-6)) – (5.8 × 10^(-7))
Perform following calculations and express results in scientific notations (exponential notations),
i. (1.5 × 10-6) – (5.8 × 10-7)
ii. (9.8 × 10-3) – (8.8 × 10-3)
iii. (6.5 × 10-8) – (5.5 × 10-9)
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To perform subtraction operation, first the numbers are written in such a way that they have the same exponent. Then subtraction of coefficients can be done.
i. (1.5 × 10-6) – (5.8 × 10-7)
= (1.5 × 10-6) – (0.58 × 10-6)
= (1.5 – 0.58) × 10-6
= 0.92 × 10-6
= 9.2 × 10-7
ii. (9.8 × 10-3) – (8.8 × 10-3)
= (9.8 – 8.8) × 10-3
= 1.0 × 10-3
iii. (6.5 × 10-8) – (5.0 × 10-9)
= (6.5 × 10-8) – (0.50 × 10-8)
= (6.5 – 0.50) × 10-8
= 6.0 × 10-8
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