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Math worksheet for practicing integer operations with a fun riddle theme.

A worksheet titled "13 Hearts" featuring math problems involving adding and subtracting integers, with a cartoon sheep decorated with hearts. Students solve the equations and match letters to reveal a riddle. The bottom section asks, "What has 13 hearts, but no other organs?" with a number grid for solving.

A worksheet titled "13 Hearts" featuring math problems involving adding and subtracting integers, with a cartoon sheep decorated with hearts. Students solve the equations and match letters to reveal a riddle. The bottom section asks, "What has 13 hearts, but no other organs?" with a number grid for solving.

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