Home > Math > Counting > Count the Numbers Advance > Finding Missing Number — 1-100 > Find The Missing Number - Week FourFind The Missing Number – Week Four ■Count the Numbers Advance■Finding Missing Number — 1-100 Want more content like this? Access over 6,000 exclusive items. Members only. $4.16/month when paid annually $8.99/month Feb 6, 20150 comments This is an engrossing educational game for preschool children, in which they learn number sequence. Get it now!