Oblicz w pamięci! 1. -12 + (-15) 2. -40 + 25 3. -101 + (-110) 4. -7 + 42 5. - 101 + 74 6. -105 + 140 7. -16 +5 = 8. 89 + (-19)= 9. -27 + 32= 10. -8 1/2 + 6 = 11. 1/2 + ( -1/2)= 12.-3 3/4 + 1/4= 13. -13 + 5,6= 14. -6,2 + (-2)= 16.

Oblicz w pamięci! 1. -12 + (-15) 2. -40 + 25 3. -101 + (-110) 4. -7 + 42 5. - 101 + 74 6. -105 + 140 7. -16 +5 = 8. 89 + (-19)= 9. -27 + 32= 10. -8 1/2 + 6 = 11. 1/2 + ( -1/2)= 12.-3 3/4 + 1/4= 13. -13 + 5,6= 14. -6,2 + (-2)= 16.
Odpowiedź

-12 + (-15) = -27 -40 + 25 = -15 -101 + (-110) = -211 -7 + 42 = 35 -101 + 74 = -27 -105 + 140 = 35 -16 + 5 = -11 89 + (-19) = 70 -27 + 32 = 5 -8 1/2 + 6 = -2 1/2 1/2 + (-1/2) = 0 -3 3/4 + 1/4 = -3 2/4 -13 + 5,6 = -7,4 -6,2 + (-2) = -8,2

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