With the concept of base 10, it's easy to understand place values. Help your child learn that each digit is ten times the value of the one to its right.

Become a number detective in this riddle-filled worksheet!

Figure out what the numbers are from the clues! For example, which number has four tens and five ones? These math riddles are a fun challenge for kids.

Find out how well you know your numbers under 100 in this simple place value worksheet!

Identify the names of numbers in the tens of thousands in this colorful worksheet!

Match words to visuals in this helpful base ten worksheet!

Match word forms of multi-digit numbers with this interactive second- and third-grade worksheet! 

Match numbers to their names in this hands-on worksheet!

Learn all about the word forms of multi-digit numbers with this cut-and-paste worksheet, tailored for second through fourth graders!

On this third grade math worksheet, kids round to estimate the sum of two numbers, a useful strategy for checking the results of calculations.