Guess the Hidden Numbers from 15 to 20

Here we have to wait for a worthy opposition - the baby Oolzoo, the magician Oolzoo, the speaky Oolzoo and the pirate Oolzoo. Are you ready to face these Oolzoos head-on and be the ultimate card champ? The game encourages your young mathematician to use their understanding of numbers to recognize them. The student will guess the hidden numbers - 15 to 20 in this game.