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Common Core Standard 1.OA.A.1 Questions

Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.1

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Grade 1 Subtraction with Regrouping CCSS: 1.OA.A.1

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There are 15 kittens. 6 kittens are black. The rest are white. Which number sentence shows how to find the number of white kittens?
  1. 10 + 5 = 15
  2. 15 - 6 = 9
  3. 9 - 6 = 3
  4. 6 + 5 = 11
Grade 1 Addition CCSS: 1.OA.A.1
3 birds are in the tree. No birds join them. How many birds are there now?
  1. 3 + 0 = 3
  2. 3 + 2 = 5
  3. 0 + 2 = 2
  4. 3 + 1 = 4
Grade 1 Addition CCSS: 1.OA.A.1
8 birds are in the tree. No birds join them. How many birds are there now?
  1. 8 + 1 = 9
  2. 0 + 7 = 0
  3. 8 + 2 = 10
  4. 8 + 0 = 8
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