Singapore Math 70 Must-Know Word Problems, Level 2, Grade 3 by School Specialty Publishing
3rd Grade Math Compilation
The elementary grades laid the foundations, the basics of arithmetic: addition, subtraction, multiplication, division, and fractions. In grade 5, students are expected to master most aspects of fraction math and begin working with the rest of the Math Monsters : decimals, ratios, and percents all of which are specialized fractions. Word problems grow ever more complex as well, and learning to explain justify multi-step solutions becomes a first step toward writing proofs.
School Specialty Publishing
Singapore Math - Third Grade