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Common Core Standard 1.NBT.C.4 Questions

Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

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Grade 1 Addition with Regrouping CCSS: 1.NBT.C.4
6 + 23
  1. 30
  2. 41
  3. 23
  4. 29
Grade 1 Addition with Regrouping CCSS: 1.NBT.C.4
23 + 7
  1. 16
  2. 30
  3. 24
  4. 8
Grade 1 Addition with Regrouping CCSS: 1.NBT.C.4
8+16
  1. 40
  2. 24
  3. 21
  4. 9
Grade 1 Addition with Regrouping CCSS: 1.NBT.C.4
Grade 1 Addition with Regrouping CCSS: 1.NBT.C.4
18+7
  1. 25
  2. 26
  3. 45
  4. 19
Grade 1 Addition CCSS: 1.NBT.C.4
23 + 5 =
  1. 943
  2. 59
  3. 28
  4. 90
Grade 1 Addition CCSS: 1.NBT.C.4
94+6=
  1. 100
  2. 92
  3. 102
  4. 90
Grade 1 Addition CCSS: 1.NBT.C.4
58+40=
  1. 10
  2. 98
  3. 108
  4. 90
Grade 1 Addition CCSS: 1.NBT.C.4
33 + 20 =
  1. 50
  2. 53
  3. 60
  4. 63
Grade 1 Addition CCSS: 1.NBT.C.4
Grade 1 Addition CCSS: 1.NBT.C.4
[math]5+10=[/math]
  1. 5
  2. 10
  3. 15
  4. 20
Grade 1 Addition with Regrouping CCSS: 1.NBT.C.4
Regroup.

4 tens + 23 ones =
  1. 4 tens + 3 ones
  2. 5 tens + 3 ones
  3. 6 tens + 3 ones
  4. 7 tens + 3 ones
Grade 1 Addition with Regrouping CCSS: 1.NBT.C.4
Regroup.

5 tens + 12 ones =
  1. 5 tens + 1 ones
  2. 5 tens + 2 ones
  3. 6 tens + 1 ones
  4. 6 tens + 2 ones
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