Matching Pairs A UNIR CÁLCULOSOnline version multiplicaciones by Mariela Medina 1 3x9 2 4x5 3 4 x 9 4 8 x 5 5 7 x 5 6 5 x 9 7 5 x6 8 8x8 9 9x9 10 7 x 9 40 63 64 45 35 81 27 36 20 30