Become a number detective in this riddle-filled worksheet!

Adding and subtracting large numbers can sometimes be difficult. Estimating is an easy way to figure out if your answer is close, or if you need to try again.

Children practice conceptualizing a million in this creative writing exercise.

Develop your rounding skills with this helpful worksheet!

Hone your rounding skills with this colorful worksheet!

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

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

Match words to visuals in this helpful base ten worksheet!

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