Sig Fig Calculations

For each problem, calculate an answer, then round to the appropriate number of sig figs.

Equation calculated answer calculated answer, rounded

1) 4.5 + 2.34 = __________ = __________

2) 4.5 – 5 = __________ = __________

3) 6.00 + 3.411 = __________ = __________

4) 3.4 x 2.32 = __________ = __________

5) 7.77 / 2.3 = __________ = __________

6) 3.890 / 121 = __________ = __________

7) 1200 x 23.4 = __________ = __________

8) 120 x 0.0002 = __________ = __________

9) 78.5 + 0.0021 + 0.0099 = __________ = __________

10) (3.4 x 8.90) x (2.3 + 9.002) = __________ = __________

11) (2.31 x 10³) / (3.1 x 10²) = __________ = __________

12) 0.0023 + 65 = __________ = __________

13) (3.4 x 106) + 210,349 = __________ = __________

14) (1.09 x 3.498) + 2.45001 – (2.123/0.0023)= __________ = __________

Express your answers to problems 7, 13 and 14 in scientific notation below.