Learners use base ten diagrams to enhance their understanding of multiples of ten in this practice worksheet.

Can your little math whiz add up sums quickly in his head? Teach him to estimate before adding, a great skill to put to use in everyday life!

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

Become a number detective in this riddle-filled worksheet!

Boost learners' understanding of place value with this two-part practice worksheet!

Identify the names of numbers in the tens of thousands in this colorful 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.