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STANDARDS

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US-WV

Math

West Virginia Math

Grade 1: Operations and Algebraic Thinking

Represent and solve problems involving addition and subtraction.

M.1.1

Fully covered
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).

M.1.2

Not covered
Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20 (e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem).
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Understand and apply properties of operations and the relationship between addition and subtraction.

M.1.3

Not covered
Apply properties of operations as strategies to add and subtract (e.g., If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known: Commutative Property of Addition. To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12: Associative Property of Addition).
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M.1.4

Not covered
Understand subtraction as an unknown-addend problem (e.g., subtract 10 – 8 by finding the number that makes 10 when added to 8).
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Add and subtract within 20.

M.1.5

Not covered
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
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M.1.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10 and use strategies such as

M.1.6.a

Mostly covered
Counting on.

M.1.6.b

Mostly covered
Making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14).

M.1.6.c

Not covered
Decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9).
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M.1.6.d

Not covered
Using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8= 4).
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M.1.6.e

Mostly covered
Creating equivalent but easier or known sums (e.g., adding 6 +7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

Work with addition and subtraction equations.

M.1.7

Not covered
Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false (e.g., Which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2).
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M.1.8

Not covered
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 = ?).
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