Math Chapter 4 Adding and Subtracting Larger Numbers
Addition names the whole parts known, and subtraction names the whole when one part is taken away.
Objectives;
| To add three-digit numbers by regrouping to hundreds |
| To add three or more addends |
| To subtract three-digit numbers by regrouping the ones, tens, hundreds; |
| To use "guess and check" as a problem solving strategy |
| To subtract across zeros by using base-ten blocks |
| To subtract by regrouping across zeros |
Vocabulary Terms;
regroup
| Lessons | Review/Assessment |
Computer Lab/Internet Sites
| E-lab lesson 4 Grade 3 | ||
| Mighty Math Number Heroes - Quizzo - level l | ||
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http://www.dositey.com/addsub/sub2digr.html lesson on regrouping | ||
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Skill
in Arithmetic: Subtract whole numbers, subtract decimals by regrouping | ||
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http://www.athens.edu/pt3/vinson/subtraction_r.ppt PowerPoint Subtraction | ||
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About.com
: http://www.sssoftware.com/freeworksheets/subtraction.html | ||
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