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

Algebra and Functions

Operations & Algebraic Thinking: Work with addition and subtraction equations.

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

Algebra and Functions

Operations & Algebraic Thinking: Work with addition and subtraction equations.

Colorado DOE

Last updated:

2018-10-08 13:42:24

No resources have been tagged as aligned with this standard.

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

Finer grained standards that are part of this one

Colorado DOE

Last updated:

2018-09-26 08:47:32

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. (This evidence outcome is limited to problems posed with whole numbers and having whole-number answers; students should know how to perform operations in the conventional order of operations when there are no parentheses to specify a particular order.)

Colorado DOE

Last updated:

2018-10-08 14:00:21

Represent addition and subtraction with objects, fingers, mental images, drawings (drawings need not show details, but should show the mathematics in the problem), sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

Colorado DOE

Last updated:

2018-10-08 13:38:34

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.

Colorado DOE

Last updated:

2018-10-08 14:39:44

Fluently add and subtract within 20 using mental strategies. (See 1.OA.C.6 for a list of strategies.) By end of Grade 2, know from memory all sums of two one-digit numbers.

Colorado DOE

Last updated:

2018-10-08 13:54:24

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

Rhode Island DOE

Last updated:

2013-06-20 15:53:13

Newsletter sign-up form

Share My Lesson