Rational Numbers Practice adding and subtracting rational numbers

Question Answer
-5/12 – 3/10 -43/60
-16 + (-11) -27
-15 + 5 -10
100 + (-25) 75
-32 + (-2) -34
8 – 18 -10
-16 – (-5) -11
-18 – 7 -25
-12 – (-27) 15
-1.6 + (-2.4) -4
3.8 – (-7.45) 11.25
When subtracting rational numbers, you need to…. …change the problem to an addition of the opposite.
When adding numbers with the SAME SIGN… Add the numbers, and keep the sign.
When adding numbers with DIFFERENT SIGNS… Put the sign of the "bigger" number, and subtract the absolute values.
9 4— + ( ? — )10 5 1/10

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