This mystery picture is a Christmas tree with lights! The children find it by practicing their tens and ones. For example: the first one on the sheet says seven tens and four ones. The answer has been written on the line to show the kids for the first one. Then they color the number that they have found the color that is in ( ) beside the number. There are two ways that this can be done. The teacher can print out the mystery picture and distribute just this page. Then the teacher can call out all of them verbally or the sheets can be printed to have the kids do it independently. So much fun while learning....enjoy!