If you're looking for a fun way for your students to practice ten more, ten less, one more, one less up to 100, color by number math mystery pictures are super fun and will help students with this skill! This can be a whole group or independent activity.HOW IT WORKS:Students will be shown what colors they need for this activityThen the slides appear showing what they are trying to figure out (ten more, ten less, one more, one less)Students figure out the answer and then look at the color box th