Readers use simple addition, subtraction, multiplication, and division to solve equations about skeletons, ravens, bats and other spooky friends. "An entertaining and effective math primer."—Publishers Weekly
Common Core Alignment:
4.OA.A.3 Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.