Matching Pairs CÁLCULO MENTALOnline version CÁLCULO by JORGE V.T 1 45+12 2 35-2+4 3 40 X 10 4 14+27 5 15:3 6 81:9 7 7+25 8 8+2+26 9 91+10 10 75:3 41 40 57 9 32 101 36 25 37 5