This set includes four differentiated mystery picture puzzles on the hundreds chart. All puzzles lead to the same picture of a happy pumpkin, but you can choose among four levels of math skills, so students working on different skills can work side by side.
In Puzzle 1, the numbers are given as sums of tens and ones (expanded notation). In Puzzle 2 the students are asked to compute +1, -1, +10 or -10 of a number on the hundreds chart. Puzzle 3 includes simple additions and subtractions: adding and subtracting within 20, adding and subtracting full tens to any number, adding and subtracting within the same ten. Puzzle 4 contains more advanced sums and differences and it is designed to develop mental math skills.
This set is intended for first or second grade, but it can be used to practice mental math skills with students in higher grades as well.
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The relevant common core standards are: CCSS.Math.Content.1.NBT.B.2, CCSS.Math.Content.1.NBT.C.4, CCSS.Math.Content.1.NBT.C.5, CCSS.Math.Content.2.NBT.B.5, CCSS.Math.Content.2.OA.B.2.