Understand Subtraction as Unknown Addend Problem Worksheet

Name Grade School
Date Questions10 Score

1
8 + 2 =
2
10 - 2 =
3
5 + 5 =
4
2 + = 10
5
4 + 6 =
6
10 - = 1
7
10 - 7 =
8
10 - 3 =
9
9 + = 10
10
10 - 8 =

Answers Key
1
8 + 2 = 10
2
10 - 2 = 8
3
5 + 5 = 10
4
2 + 8 = 10
5
4 + 6 = 10
6
10 - 9 = 1
7
10 - 7 = 3
8
10 - 3 = 7
9
9 + 1 = 10
10
10 - 8 = 2

Understand Subtraction as Unknown Addend Problem Worksheet

The CCSS.MATH.1.OA.B.4 worksheets with answers for 1st grade students to practice problems on Understand subtraction as an unknown-addend problem; for example, to solve 10 – 8 = ?, a student can use 8 + ? = 10 is available online for free in printable and downloadable (pdf & image) format. For more questions and answers on 1.OA.B.4 math activities, tap on generate new worksheet to learn, practice, test and verify math skills under the common core cluster (1OAB) understand and apply properties of operations and the relationship between addition and subtraction in domain operations and algebraic thinking.

How to Use this Worksheet

Objective
To practice these math problems of 1OAB4 worksheets, students are required to understand subtraction as an unknown-addend problem. Users can directly refer the answer key to verify the work with steps for the corresponding practice problems given in the 1.OA.B.4 activities under the domain operations and algebraic thinking in common core state standards for 1st grade mathematics. The main objective of these 1.OA.B.4 practice problems and answers is to make students to understand how to (1OAB) understand and apply properties of operations and the relationship between addition and subtraction.

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