Perform each of the following calculations. Round off your answers to two digits.
`frac(1.4 xx 10^9)((2.77 xx 10^3)(3.76 xx 10^5)`

Perform each of the following calculations. Round off your answers to two digits. frac(1)(3.40 xx 10^24)

Perform each of the following calculations. Round off your answers to two digits. frac(33)(9.00 xx 10-4)

Perform each of the following calculations. Round off your answers to three digits. frac(8.9 xx 10^6)(4.35 xx 10^4)

Perform each of the following calculations . Round off your answers to two digits. frac (1) ((3.40 xx 10^(24))

Perform each of the following calculations. Round off your answers to three digits. (3.26 xx 10^4) (1.54 xx 10^6)

Perform each of the following calculations. Round off your answers to three digits. (8.39 xx 10^7) (4.53 xx 10^9)

Perform each of the following calculations. Round off your answers to two digits. frac((4 xx 10^-3)(9.9 xx 10^5))((789)(1.002 xx10^-10)(0.3 xx 10^2)

Perform each of the following calculations . Round off your answers to two digits. frac (33) (9.00 xx 10^(-4))

Perform each of the following calculations. Round off your answers to three digits. frac (8.94xx 10 ^(4)) (4.35xx10^(4))

Perform each of the following calculations. Round off your answers to three digits. frac (9.28xx10^(9)) ((9.9 xx 10^(-7)) (511) (2.98xx10^(-6))