Sig Fig Calculations
For each problem, calculate an answer, then round to the appropriate number of sig figs. For Multi-step questions, complete one part of the problem, round the answer, then continue the next portion and round the answer.
Equation calculated
answer calculated
answer, rounded
1) 4.5 + 2.34 = 6.84 = 6.8
2) 4.5 Ð 5 =-.5 = -1 or 0.
3) 6.00 + 3.411 = 9.411 = ___9.41
4) 3.4 x 2.32 = _7.888___ = ___7.9____
5) 7.77 / 2.3 = 3.37826087 = ___3.4__
6) 3.890 / 121 = .0238842975_ = .0239_
7) 1200 x 23.4 = _28080 = _28000 or 2.8 103___
8) 120 x 0.0002 = __.024_ = __.02_____
9) 78.5 + 0.0021 + 0.0099 = _78.512____ = __78.5__
10) (3.4 x 8.90) x (2.3 + 9.002) = __________ = __________
(30.)
x (11.3) =
339 =
340
11) (2.31 x 103) / (3.1 x 102) =7.45 = _7.4 or 7.5 __
12) 0.0023 + 65 = __65.0023___ = __65__
13) (3.4 x 106) + 210,349 = __________ = __________
(360)
+ 210,349 =
210,709 =
210,710 = 2.1071 x 105
14) (1.09 x 3.498) + 2.45001 Ð (2.123/0.0023)= __________ = __________
(3.80) + 2.45001 Ð ( 920) =-913.74999 =-910 or Ð9.1 x 102
Express your answers to problems 7, 13 and 14 in scientific notation below.
