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