lesson
Using Addition Facts to Solve Subtraction
Use known addition facts to find the missing number in subtraction problems (subtraction as an unknown-addend problem).
Updated 1 month ago · 3 views
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This lesson is part of a track
Public learning track
Understanding Equality and Properties of Operations
6 lessons
Goal
Understand the equal sign as a relationship between equal values and use properties of operations to add and subtract.
6 lessons
0 of 6 done
- Understanding the Equal Sign Means "Same Value"Up next
- True and False Number SentencesNot started yet
- Using Addition Facts to Solve SubtractionYou are here
- Commutative Property: Order Doesn't Matter in AdditionNot started yet
- Associative Property: Grouping Numbers DifferentlyNot started yet
- Adding Three Numbers Using Make-a-TenNot started yet
Learning standards covered
111.3(b)(5)(G)Texas Essential Knowledge and Skills (TEKS) · Math · 1st Gradeapply properties of operations to add and subtract two or three numbers.
Open Global Standard:OGM.2.OA.2
111.3(b)(1)(B)Texas Essential Knowledge and Skills (TEKS) · Math · 1st Gradeuse a problem-solving model that incorporates analyzing given information, formulating a plan or strategy, determining a solution, justifying the solution, and evaluating the problem-solving process and the reasonableness of the solution;
Open Global Standard:OGM.2.MP.1
111.3(b)(1)(C)Texas Essential Knowledge and Skills (TEKS) · Math · 1st Gradeselect tools, including real objects, manipulatives, paper and pencil, and technology as appropriate, and techniques, including mental math, estimation, and number sense as appropriate, to solve problems;
Open Global Standard:OGM.2.MP.1
OGM.2.OA.2OGM.2.MP.1