Third graders round three-digit numbers to the nearest hundred to estimate each sum on this Adding and Estimation Worksheet, then add to find the actual total. Includes an answer key—great for quick, no-prep math practice.

Help 3rd graders master rounding with this rounding to the nearest ten worksheet, featuring guided number lines and quick practice. Answer key included—an easy, no-prep way to build number sense and estimation skills.

This round to the nearest hundred word problems worksheet gives 3rd Grade students five rounding items, three add-and-round word problems, and a written explanation task. An answer key is included so checking work is quick.

This add/subtract estimation worksheet helps 3rd graders round to the nearest ten and hundred to estimate sums and differences. Includes an answer key for quick, no-prep rounding and estimation practice.

This gram kilogram worksheet gives 3rd graders practice choosing metric units, converting grams to kilograms, and explaining a comparison. Answer key included, so measurement practice is ready to print and go.

This round to the nearest ten word problems worksheet gives 3rd graders four problems to solve and round, plus one written explanation. An answer key is included, so it prints and goes.

This rounding to hundreds worksheet gives 3rd graders nine rounding problems, a number line activity, and word problems to explain. An answer key is included, so estimation practice is ready in one print.

This time estimation worksheet helps 3rd grade students pick the better estimate for everyday activities and add estimated minutes. An answer key is included, so checking work takes seconds.

This estimation multiple choice worksheet has 3rd graders round to the nearest ten to estimate sums and differences in five bubble-answer story problems, plus two write-and-explain items. Answer key included for fast checking.

This Round to the Nearest Hundred Worksheet has 3rd Grade students name both neighboring hundreds before rounding, plus a word problem and an answer key so rounding finally makes sense.

This round to the nearest ten worksheet gives 3rd grade students ten rounding problems and three word problems, with an answer key included, so rounding becomes quick and automatic.

In this Estimating Measurement in Feet Worksheet, students complete the web below with objects that could be measured with the unit feet.

In this Estimating Measurement in Meters Worksheet, students complete the web below with objects that could be measured with the unit meters.

In this Estimating Measurement in Centimeters Worksheet, students complete the web below with objects that could be measured with the unit named in the center.

Using this What's the Weight? Worksheet, students estimate the weight of objects in the classroom and then weigh to the find the actual weights.

In this Estimating Measurement in Inches Worksheet, students complete the web below with objects that could be measured with the unit inches.