PUZZLE MATH: Making Ten with Addition

Students practice all the ways they can make ten by adding positive integers and zero. (They end this short worksheet with two examples where they consider what plus one-half and what plus one and one-half make ten as well.) Learning to 'make 10' is vital, because many students use this knowledge later to add things like 7 + 5. First they consider that 7 + 3 is 10, so using 3 of the 5 leaves 2 left over, resulting in 10 + 2 which is 12. Similar Puzzle Math titles for topics from addition through calculus can be found at www.lulu.com/roxlulu.