Nedjie Final Notebook

For addition and subtraction, look at the decimal portion (i.e., to the right of the decimal point) of the
numbers ONLY. Here is what to do:
1) Count the number of significant figures in the decimal portion of each number in the problem. (The
digits to the left of the decimal place are not used to determine the number of decimal places in the
final answer.)
2) Add or subtract in the normal fashion.
3) Round the answer to the LEAST number of places in the decimal portion of any number in the
problem.
Solve the Problems and Round Accordingly...
1) 43.287 + 5.79 + 6.284 = _______ 55.36
2) 87.54 - 3.3 = _______ 84.2
3) 99.1498 + 6.5397 + 9.7 = _______ 115.4
4) 5.868 - 5.1 = _______ .8
5) 59.9233 + 86.21 + 99.396 = _______ 245.53
6) 7.7 + 26.756 = _______ 34.5
7) 66.8 + 2.3 + 4.8516 = _______ 74.0 7.4X10^1
8) 9.7419 + 43.545 = _______ 53.287
9) 4.8976 + 48.4644 + 1.514 = _______ 54.876
10) 4.335 + 35.85 = 40.19 _______
11) 9.448 - 1.7 = _______ 7.7
12) 75.826 - 8.6555 = _______ 67.170
13) 57.2 + 23.814 = _______ 81.0
14) 77.684 - 4.394 = _______ 73.290
15) 26.4496 + 3.339 = _______ 29.789
16) 9.6848 + 29.85 = _______ 39.53
17) 63.11 + 2.5412 + 4.93 = _______ 70.58
18) 11.2471 + 75.4 = _______ 86.6
19) 73.745 - 8.755 = _______ 64.990
20) 6.5238 + 1.7 + 27.79 = _______ 36.0
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