Given the calculations with the calculator answer, write the answers with the appropriate number of significant figures.

Example: $6\mathrm{.}003\mathrm{.}00=18$

$23+46=69$

$23\mathrm{.}0+46\mathrm{.}0=69$

$253+345\mathrm{.}8=598\mathrm{.}8$

$56-35=21$

$56\mathrm{.}00-35\mathrm{.}0=21$

$4612=552$

$3\mathrm{.}245\mathrm{.}63=18\mathrm{.}2412$

$(2\mathrm{.}355+2\mathrm{.}645)10\mathrm{.}00=50$

$65432=20\mathrm{.}4375$

$0\mathrm{.}0240\mathrm{.}063=1\mathrm{.}512{10}^{-3}$

The answer should be $q,18\mathrm{.}0q,$

The answer should be $$

The answer should bin $$

The answer should bc $$

The answer should $b$

The answer should $b$

The answer should$1.$ be $$

The answer should be $$

The answer should be $$

The answer should be $$

The answer should be $$