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Partner Problem Solving Second Grade

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					       TWO HEADS ARE BETTER THAN ONE

               PARTNER PROBLEM-SOLVING



Without doing the addition problem, explain how you can tell that the sum of 290
and 162 is greater than 300.



       TWO HEADS ARE BETTER THAN ONE

               PARTNER PROBLEM-SOLVING



One of these number sentences is TRUE and the other is FALSE (wrong). Without
solving each problem, explain how you can figure out which one is TRUE and which
one is FALSE.

     A. 395 + 105 = 400
     B. 580 + 20 = 600



       TWO HEADS ARE BETTER THAN ONE

               PARTNER PROBLEM-SOLVING



Rename 325 using only tens and ones. You may use or draw place value blocks

325 = 3 hundreds + 2 tens + 5 ones

Now rename it:

325 = ______tens + _____ones

Explain how you know you are right.
          TWO HEADS ARE BETTER THAN ONE

                  PARTNER PROBLEM-SOLVING


   DAY       Number of
             blossoms         Each day Dan counts the blossoms on the tomato plants and
                          writes it down on this chart. He notices that there is a pattern in
Monday       14           the number of blossoms. If the pattern continues, which is a way
                          that Dan can figure out how many blossoms there will be on
Tuesday      18           Friday?

                             A.   14 + 26 = 40
Wednesday    22
                             B.   26 + 5 = 31
Thursday     26              C.   26 + 4 = 30
                             D.   26 + 3 = 29
Friday       ?
                          EXPLAIN HOW YOU KNOW YOU ARE RIGHT.




   TWO HEADS ARE BETTER THAN ONE

                  PARTNER PROBLEM-SOLVING
Cut out the cards below. Move them around to make as many true number sentences as you
can. Write each one down. Make sure you and your partner agree that the number sentences
are true. If you don’t agree, you must prove your answer to your partner.




  18 4 22 -                                                                   =
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Description: Partner Problem Solving Second Grade