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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 - =
_
