Unit 4 Addition and Subtraction to 1000

Students continue work on whole number operations and place value. Students will represent numbers up to the thousands in multiple structures. They will refine their addition and subtraction strategies for 2 and 3 digit numbers with regrouping, and use the inverse to check their solutions. Students will also explore estimation using rounding.

Math Videos: http://studyjams.scholastic.com/studyjams/jams/math/index.htm

Practice addition and subtraction with regrouping at www.IXL.com

Click here to take timed tests addition and subtraction facts:

Go to Leon's Math Dojo and Practice Addition with regrouping:
http://streaming.discoveryeducation.com/braingames/iknowthat/Dojo/Dojo.cfm?Topic=singledigitadditionwithrenaming

Leon's Math Dojo 2 digit subtraction:
http://streaming.discoveryeducation.com/braingames/iknowthat/Dojo/Dojo.cfm?Topic=DoubleDigitSubtraction

Practice making change on these websites:
*http://www.funbrain.com/cgi-bin/cr.cgi

Practice Counting coins at:
http://www.hbschool.com/activity/counting_money/

Check out the Brainpop Jr video on Estimation and Rounding:
http://www.brainpopjr.com/math/numbersense/rounding/preview.weml

Practice Estimation and Rounding:
*http://pbskids.org/cyberchase/math-games/glowlas-estimation-contraption/
*http://www.free-training-tutorial.com/rounding/sharks.html