Help your young learners discover the concept of adding decimals with this 8-page, introductory practice pack! Students will begin working with decimal addition by using commonly utilized strategies likes the standard algorithm, expanded form, representational modeling, and comparing decimals to money. Students will also learn distribution and compatible pairing strategies often used with the Distributive, Commutative, and Associative Properties. Associated vocabulary is woven into each activity. Learners will also be challenged with missing digit puzzles, true / false statements, and extra information word problems. An 8-page, annotated teacher answer key is included!
 
Included in this Pack:
Adding Decimals: Learning and Practice Worksheets
 
Adding Decimals Algorithm and Vocabulary
Adding Decimals with the Standard Algorithm Practice
Adding Decimals Using Expanded Form and Mathematical Properties
Drawing Models of Decimal Addition 
True / False Statements and Missing Digits Puzzles
Adding Decimals: Using Money to Model
Adding Decimals with Distribution and Compatible Pairing
Adding Decimals: Word Problem Challenge
Teacher Annotated Answer Key
 
Common Core Standards Addressed in This Unit:
Grade 5:  Number & Operations in Base Ten
CCSS.MATH.CONTENT.5.NBT.A.1
Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left.
 
CCSS.MATH.CONTENT.5.NBT.A.3.A
Read and write decimals to thousandths using base-ten numerals, number names, and expanded form, e.g., 347.392 = 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10) + 9 × (1/100) + 2 × (1/1000).
 
CCSS.MATH.CONTENT.5.NBT.B.7
Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
 
Grade 5: Operations & Algebraic Thinking
CCSS.MATH.CONTENT.5.OA.A.1
Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
CCSS.MATH.CONTENT.5.OA.A.2
Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation "add 8 and 7, then multiply by 2" as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.
 
Grade 6:  The Number System
CCSS.MATH.CONTENT.6.NS.B.3
Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation
 
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