Whether it's allowance or a dog-walking business, kids are often looking for ways to earn an extra buck. Tap into that interest with practice that includes calculating tips, sales tax and commission.

Get your kid on her way to mastering base 10 with this workbook. With an emphasis on place value, base 10 makes it easy for her to visualize large numbers and see how numbers relate to each other.

The best kind of mental workout! Enjoy calculating the mystery numbers, identifying the mystery digits, spotting patterns, playing games, and even drawing pictures with these engaging math puzzles.