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Standard: Add and subtract within 20 CCSS.MATH.CONTENT.2.OA.B.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from.

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Presentation on theme: "Standard: Add and subtract within 20 CCSS.MATH.CONTENT.2.OA.B.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from."— Presentation transcript:

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2 Standard: Add and subtract within 20 CCSS.MATH.CONTENT.2.OA.B.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers. DISCLAIMER: SCARY SOUNDS MAY SUDDENLY OCCUR

3  Everyday life:  Calendar  Money  Age  Time

4 += ? 1010 8 11

5 + = ? 9 12 1010

6 + ? = 10 6 4 55

7 1+91+96+6 8+1 7+37+3 3+73+76+57+43+9 2+85+59+12+85+59+15+4 6+410+08+24+6

8 + = ? 12 17 1515

9 + = ? 10 11 1511

10 + = ? 14 12 1515

11 8+9=6+3=4+9= 5+6=8+8=5+5= 9+3=4+3=2+9= 5+4=2+5=3+6=

12  Center 1: Math Bingo  Center 2: I want “sum” Candy  Center 3: Dice Roll Color  Center 4: Addition to 10 Candy Corn  Center 5: Spooky trees and scary spiderwebs Rules: Silent cheers, be team-players, help each other, write name on worksheets, be kind!


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