Unformatted text preview: 1) Multiplication of signed numbers. a) (+2)(+2) = 4 b) (+2)(2) =  4 c) (2)(2) = 4 2) Division of signed numbers. d) +2/+2 = 1 e) +2/2 =  1 f) 2/2 = 1 3) Addition of signed numbers g) (10) + (20) =  30 h) (+10) + (20) =  10 4) Subtraction of signed numbers i) (20) – (30) = 10 j) (20) – (+30) =  50 k) (+20) – (30) = 50...
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 Spring '10
 
 Elementary arithmetic, Convert percentage

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