Matching Pairs matematica secundariaOnline version operaciones by Domingo Alejo Trinidad Salomon 1 -3-5-8 2 5-7-6 3 (-5) * (-8)= 4 (2)4 = 5 (-8+5) x 4= 6 (12x5) - 45 = 7 8-4-9+7= 8 -8-4-8+20 15 -8 2x2x2x2 0 40 -16 2 -12