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CCSS.Math.Content.1.OA.B.4

Understand subtraction as an unknown-addend problem.

  • Operations and Algebraic Thinking

  • Understand and apply properties of operations and the relationship between addition and subtraction.

NGA Center/CCSSO
Last updated: 
2010-06-11 08:25:47

Lessons for this standard

math symbol

Number Work.

Math_Team
Updated: 
2016
5
3 Comments
  • Math
  • Elementary (Grades K-2)
Common Core
Use the number line to fill in the missing number in these number sentences. Aligned with Common Core State Standards: 1.OA.3, 1.OA.4, 1.OA.6,...

Sample Parent Letter: Add and Subtract in Grade 2

American Federation of Teachers
Updated: 
2017
4.5
2 Comments
  • Math
  • Elementary (Grades K-2)
Common Core
The AFT has prepared sample parent letters on selected mathematics topics for grades K-8. Available in English and Spanish, the aim is to help...
whole numbers

Make a Ten Concentration

LisaDerr
Updated: 
2016
2
1 Comment
  • Math
  • Elementary (Grades K-2)
Common Core
Quick and easy to make and a handy center activity. Aligned to Common Core State Standard: 1.OA.4
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Related standards

Finer grained standards that are part of this one

For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.

NGA Center/CCSSO
Last updated: 
2010-06-11 08:26:00
Standards with the same topic and subject but for other grades

CCSS.Math.Content.3.OA.B.6

Understand division as an unknown-factor problem.

11 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-04 06:38:45

CCSS.Math.Content.3.OA.A.1

Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each.

39 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-04 06:36:38

CCSS.Math.Content.4.OA.A.1

Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.

9 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-04 06:50:21

CCSS.Math.Content.3.OA.A.2

Interpret whole-number quotients of whole numbers, e.g., interpret 56 ÷ 8 as the number of objects in each share when 56 objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal shares of 8 objects each.

19 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-04 06:36:58

CCSS.Math.Content.2.OA.C.4

Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

5 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-04 06:28:35
State-specific standards derived from this one

MAFS.1.OA.2.4

Understand subtraction as an unknown-addend problem.

Florida DOE
Last updated: 
2015-04-08 13:03:28

Math.Content.1.OA.4

Understand subtraction as an unknown-addend problem.

North Carolina DOE
Last updated: 
2015-06-23 09:57:13

OA.M.1.4

Understand subtraction as an unknown-addend problem (e.g., subtract 10 – 8 by finding the number that makes 10 when added to 8).

West Virginia DOE
Last updated: 
2016-02-01 08:30:51

1.OA.4

Understand subtraction as an unknown-addend problem.

Mississippi DOE
Last updated: 
2016-02-23 17:10:22

1.OA.4

Understand subtraction as an unknown-addend problem.

Kansas DOE
Last updated: 
2017-11-10 23:43:49
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