Calculate \((4.5 \times 10^4) + (6.45 \times 10^6)\). Work out \((4 \times 10^9) \times (7 \times 10^{-3})\). Multiply the first numbers \(4 \times 7 = 28\). Apply ...

convert the numbers from standard form into decimal form or ordinary numbers complete the calculation convert the number back into standard form Calculate \((4 \times 10^9) \times (7 \times 10^{-3})\) ...