K 1st 2nd COMMON CORE MATHEMATICS Number Talks · The Doubles help with the Near Doubles. 25 + 25...
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Created by ALL SORTS OF MATH Number Talks Strategies Posters COMMON CORE MATHEMATICS K 1st 2nd 2016 © All Sorts of Math
Transcript of K 1st 2nd COMMON CORE MATHEMATICS Number Talks · The Doubles help with the Near Doubles. 25 + 25...
Created byALL SORTS OF MATH
Number Talks Strategies Posters
COMMON CORE MATHEMATICSK 1st 2nd
2016
©A
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2016
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ADDITION STRATEGY
Make a FiveMake a five by decomposing another number.
4 + 3
K 1st
2016
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ADDITION STRATEGY
Make a TenMake a ten by decomposing another number.
8 + 6
K 1st
2016
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ADDITION STRATEGY
Make a TenMake a ten by decomposing another addend.
8 + 6
1st
8 + 2 = 1010 + 4 = 14
2nd
2 4
2016
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ADDITION STRATEGY
DoublesThe Doubles help with the Near Doubles.
4 + 4
K 1st
2016
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ADDITION STRATEGY
DoublesThe Doubles help with the Near Doubles.
25 + 25
1st 2nd
ADDITION STRATEGY
Near DoublesThe Doubles help with the Near Doubles.
2016
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6 + 7 = 6 + 6 + 1
K 1st
15 + 16 15 + 16 = 15 + 15 + 1
15 15 1
15 + 16
ADDITION STRATEGY
Near DoublesThe Doubles help with the Near Doubles.
2016
©A
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1st 2nd
2016
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6 + 3
6 7 8 9
ADDITION STRATEGY
Count OnCount on from the larger number.
K 1st
2016
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16 + 3
16 17 18 19
+1 +1 +1
ADDITION STRATEGY
Count OnCount on from the larger addend.
1st 2nd
2016
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ADDITION STRATEGY
Count AllStart from 1 and count every number.
4 + 51 2 3 45 6 7 8 9
K 1st
2016
©A
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ADDITION STRATEGY
Count AllStart from 1 and count every number.
10 + 3
0 1 2 3 4 5 6 7 8 9 10 11 12 13
1st 2nd
2016
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18 + 6
2 4
18 + 2 = 2020 + 4 = 24
1st 2nd
ADDITION STRATEGY
Make Friendly NumbersMake a friendly number by decomposing another addend.
2016
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ADDITION STRATEGY
Place ValueDecompose and add by the place value.
21 + 14
20 1 10 420 + 10 = 30
1 + 4 = 530 + 5 = 35
1st 2nd
2016
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ADDITION STRATEGY
Add Up in ChunksKeeping one addend whole, add the second addend in friendly chunks.
23 + 12+10 +2
23 33 35
1st 2nd
2016
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2nd
17 + 19–116
+1+ 20
ADDITION STRATEGY
CompensationMake friendlier numbers by removing from one addend, then adding
the same amount to the other addend.
1st
SUBTRACTION STRATEGY
Add UpStart with the subtrahend, add up in friendly chunks to the minuend.
50 – 39 = 11
+1 +10
39 40 50
11
1st 2nd
2016
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SUBTRACTION STRATEGY
RemovalStart with the minuend, remove the subtrahend in friendly chunks.
22 – 8 = 14
–2
14 20 22
–8
–6
1st 2nd
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