Practice place value, rounding and addition, all in one worksheet! Your child will learn to add up estimated sums quickly in his head.

How quickly can your math master round and add up these sums? Help him build a valuable math skill with this estimation 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 sum of two numbers, a useful strategy for checking the results of calculations.

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.

Find the hidden rule in these puzzling math tables! Compare your "in" number to the corresponding "out" number to find the pattern in each table.

Math whizzes can learn to estimate sums quickly using front-end estimation! Round to the highest place value and then add or subtract the rounded numbers.

Children practice rounding to the nearest thousand in this rounding and place value worksheet.