Matching Pairs NumbersOnline version The following game is to identify people's attention and learning about numbers by CARLOS ALBERTO AVILES CASTANEDA 1 821 2 12 3 13 4 528 5 25 6 20 7 29 8 11 9 254 10 526 Twenty five Twelve Twenty Eleven Five hundred and twenty - eight Thirteen Two hundred and fifty four Eight hundred and twenty - one Twenty nine Five hundred and twenty - six