Dive into underwater themed word problems to discover numbers to round, and multi-step problems to put kids through the four operations.

When your fourth grader is ready to move on to multiple-digit addition and subtraction, these riddles will make review fun and challenging.

Help your second graders get a grip on place value while practicing two- and three-digit math, plus rounding to the nearest hundred.

Second graders will develop a deeper understanding of place value in this engaging math workbook.