Arithmetic Teacher (1991-1992) Vol. 39, No. 9

  • Arithmetic Teacher (1991-1992) Vol. 39, No. 9

    co = :_-N -=-= ~ -= ~ ... II)= ~ N = -..,= N:: -= (")= :::.__ N -== = ::. --= ;_ N= ; ~ N= =~ ; = 0 -= = Z N= =---COo :: = N = =p = ~8: en = ::::.. c( .::-= ~ ~ ; ~ = E,_ : --= " ,...= g. U') -= tlll'l'l'lllllljlltpltlllll'lll'l'l' JIIIIII'IIIIIIJIII!llll'll\llll'll'lllltllplt IJii) 1 In 2 3 21 31 ~ 41 51 61 71 81 91 1