Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

Operations and Algebraic Thinking

Work with addition and subtraction equations.

Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

Operations and Algebraic Thinking

Work with addition and subtraction equations.

Rhode Island DOE

Last updated:

2013-06-20 15:53:13

No resources have been tagged as aligned with this standard.

- This standard is part of: CCSS.Math.Content.1.OA.D
- This standard is derived from: CCSS.Math.Content.1.OA.D.8

Finer grained standards that are part of this one

Rhode Island DOE

Last updated:

2013-06-20 15:53:14

Standards with the same topic and subject but for other grades

Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

1 lesson is aligned with this standard

Rhode Island DOE

Last updated:

2013-06-20 15:54:01

Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

Rhode Island DOE

Last updated:

2013-06-20 15:52:51

Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Rhode Island DOE

Last updated:

2013-06-20 15:53:35

Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).

Rhode Island DOE

Last updated:

2013-06-20 15:52:51

For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.

Rhode Island DOE

Last updated:

2013-06-20 15:52:51

Standards derived from the same national standard

Maryland DOE

Last updated:

2016-12-16 16:46:21

North Carolina DOE

Last updated:

2015-06-23 09:57:13

Determine the unknown whole number in an addition or subtraction equation relating three whole numbers (e.g., determine the unknown number that makes the equation true in each of the equations 8 + __ = 11, 5 = __ − 3, 6 + 6 = __).

Arizona DOE

Last updated:

2019-11-01 10:46:24

Vermont DOE

Last updated:

2013-06-21 08:28:12

North Dakota DOE

Last updated:

2015-04-08 13:03:28

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