Algebra Worksheets - Complete Set With Answers Page 7
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72Always change double signs to a single sign before combining with RULES 1 or 2 from the previous
worksheet.
For example:
a) +5 + ( + 7) (
.) = + 5 + 7 = + 12
Add the numbers, keep the common sign
b) 5 - (- 7) (
.) = + 5 + 7 = + 12
Add the numbers, keep the common sign
c) 5 - (+ 7) (
.) = 5 - 7 = - 2
Subtract the numbers, keep the sign of the larger number
d) 5 + (- 7) (
.) = 5 - 7 = - 2
Subtract the numbers, keep the sign of the larger number
Add or Subtract:
(A)
1) +4 + (+ 2) =
2) + 4 + (- 2) =
3) + 4 - (- 2) =
4) + 4 - (+ 2) =
5) - 6 + (+ 3) =
6) - 6 - (- 3) =
7) - 6 + (- 3)
8) - 6 - (+ 3) =
9) 8 - (- 10) =
10) 8 + (- 10) =
11) 8 - (+ 10) =
12) 8 + (+ 10) =
(B)
1) 5 + (+ 2) - (+ 6) =
2) - 9 - (+3 ) + 5 =
3) 17 - (+ 7) - ( - 5)
4) - 4 - (+ 5) - (- 8) =
5) 15 - (+ 16) - (- 1) =
6) 8 + 3 - (+ 6) =
7) 20 + (- 23) - 5 =
8) - 4 + (+ 6) - (- 6) =
9) 30 - (+ 15) - (-5) =
10) 14 + 10 + (- 7) =
11) - 12 + 4 - 7 + (- 2) =
12) 3 + (- 4) - (- 3) +5 =
5
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