Answer
a) $1.4598\times10^{2}$
b) $3.18\times10^{2}$
c) $6.2\times10^{-3}$
d) $9.9\times10^{10}$
Work Step by Step
For addition and subtraction, make sure that the exponent has the same value.
For multiplication, we multiply the bases and add the exponents.
For division, we divide the bases and subtract the exponents.
a) $(1.4575\times10^{2}) + (0.0023\times10^{2}) = 1.4598\times10^{2}$
b) $\frac{7.95\times10^{4}}{2.5\times10^{2}}=3.18\times10^{2}$
c) $(7.0\times10^{-3}) - (0.8\times10^{-3}) = 6.2\times10^{-3}$
d) $(1.0\times9.9)\times10^{4+6} = 9.9\times10^{10}$
