Answer:
(a) 0.000 000 603
(b) 0.009
(c) 0.000 000 000 000 002 27
Step-by-step explanation:
(a) Move the decimal point seven places to the left.
6.03 × 10⁻⁷ = 0.000 000 603
(b) Align the decimal points over each other, then subtract
0.0012
-0.0003
0.0009
(c) 7.078 × 10⁻⁶ × 3.21 × 10 ⁻¹⁰
= (7.078 × 3.21) × (10⁻⁶ × 10 ⁻¹⁰) Collected the exponents
= 22.7 × 10⁻¹⁶ Handled the parentheses separately
= 2.27 × 10 × 10⁻¹⁶ Converted 22.7 to a power of 10
= 2.27 × 10⁻¹⁵ Added the exponents
= 0.000 000 000 000 002 27
