February Math Workshop

February Math Workshop


                          

FEBRUARY MATH WORKSHOP

GRADE 2

ADDITION AND SUBTRACTION WITHIN 1,000 WITH WORD PROBLEMS TO 100.

In this unit, the children build upon all their previous work with place value. They extend their work with addition and subtraction solving algorithms with numbers up to 1,000. The children will continue to use drawings and models to help them to understand the steps needed to solve the problems.They will be using a variety of strategies ( the arrow way, number bonds, totals below, vertical way etc.)They will also continue to work with various types of word problems with numbers up to 100.

Strategies from  left to right:   Tape Diagram, Number Bonds and Arrow Way

                                                      Totals Below Strategy

New Key Vocabulary For This Unit

 - Compensation: a simplifying strategy where the children add or subtract the same amount to or from both numbers to create an equal but easier problem. e.g. 610 - 290 = 620-300 = 320

- New Groups Below: show newly composed units on the line below the appropriate place in the addition problem.

   - Algorithm: a step by step procedure used to solve a problem.

How You Can Help At Home
     -practice counting backward and forward by 10's and 100's.

     -practice finding 10 more or 10 less, and/or 100 more or 100 less than any  2-digit or 3-digit                 number.