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.

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

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

Practice rounding to the tens and hundreds places with this essential rounding worksheet!