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Common Core Standard 1.OA.C.6 Questions

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

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1 2 3 4 ... 10
Grade 1 Addition CCSS: 1.OA.C.6
What is 2+10?
  1. 20
  2. 12
  3. 10
  4. 14
Grade 1 Addition CCSS: 1.OA.C.6
12 + 3 =
  1. 5
  2. 10
  3. 15
  4. 1
Grade 1 Addition CCSS: 1.OA.C.6
15 + 1 =
  1. 14
  2. 16
  3. 15
  4. 10
Grade 1 Addition CCSS: 1.OA.C.6
14 + 3 =
  1. 17
  2. 16
  3. 14
  4. 9
Grade 1 Addition CCSS: 1.OA.C.6
9+9
  1. 10
  2. 15
  3. 18
  4. 20
Grade 1 Addition CCSS: 1.OA.C.6
5 + 6 =
  1. 11
  2. 12
  3. 6
Grade 1 Addition CCSS: 1.OA.C.6
7+7=
  1. 14
  2. 15
  3. 16
  4. 13
Grade 1 Addition CCSS: 1.OA.C.6
1+3=
  1. 1
  2. 3
  3. 4
  4. 2
Grade 1 Addition CCSS: 1.OA.C.6
[math]9+5=[/math]
  1. 13
  2. 12
  3. 14
  4. 9
Grade 1 Addition CCSS: 1.OA.C.6
9 + 3 =
  1. 13
  2. 11
  3. 12
Grade 1 Subtraction CCSS: 1.OA.C.6
9-5=
  1. 2
  2. 4
  3. 9
  4. 14
Grade 1 Addition CCSS: 1.OA.C.6
4 + 5 =
  1. 9
  2. 4
  3. 6
  4. 3
Grade 1 Addition CCSS: 1.OA.C.6
Which equals 10?
  1. [math]8 + 1[/math]
  2. [math]4 + 2[/math]
  3. [math]7 + 3[/math]
  4. [math]5 + 4[/math]
Grade 1 Addition CCSS: 1.OA.C.6
5 + 8
  1. 13
  2. 3
  3. 12
  4. 40
Grade 1 Addition CCSS: 1.OA.C.6
6 + 7
  1. 13
  2. 14
  3. 8
  4. 20
Grade 1 Subtraction CCSS: 1.OA.C.6
Grade 1 Addition CCSS: 1.OA.C.6
1 + 3 =
  1. 2
  2. 5
  3. 4
  4. 1
1 2 3 4 ... 10

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