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Math
Virginia Math
Grade 2: Computation and Estimation
Apply strategies (e.g., rounding to the nearest 10, compatible numbers, other number relationships) to estimate a solution for single-step addition or subtraction problems, including those in context, where addends and minuends do not exceed 100.
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Apply strategies (e.g., the use of concrete and pictorial models, place value, properties of addition, the relationship between addition and subtraction) to determine the sum or difference of two whole numbers where addends or minuends do not exceed 100.
- Add & subtract within 20
- Add 2-digit numbers by making tens
- Add and subtract on the number line word problems
- Add and subtract within 100 word problems 3
- Add using groups of 10 and 100
- Add within 100 using a number line
- Add within 100 using place value blocks
- Add within 20 visually
- Adding 2-digit numbers without regrouping
- Adding 53+17 by making a group of 10
- Adding by making a group of 10
- Adding with regrouping
- Addition and subtraction with number lines
- Addition word problem: horses
- Addition word problems within 100
- Break apart 2-digit addition problems
- Breaking apart 2-digit addition problems
- Find the missing number (add and subtract within 100)
- Missing numbers in addition and subtraction
- Multi step addition word problem
- Multi-step subtraction word problem
- Select strategies for adding within 100
- Strategies for adding 2-digit numbers
- Subtract 2-digit numbers (no regrouping)
- Subtract within 100
- Subtract within 20
- Subtract within 20 visually
- Subtracting 10s using place value
- Subtracting 1s using place value
- Subtracting a 1-digit number with regrouping
- Subtracting two-digit numbers without regrouping
- Subtraction word problems within 100
- Understanding place value when adding ones
- Understanding place value when adding tens
Represent, solve, and justify solutions to single-step and multistep contextual problems (e.g., join, separate, part-part-whole, comparison) involving addition or subtraction of whole numbers where addends or minuends do not exceed 100.
- Add and subtract on the number line word problems
- Add and subtract within 100 word problems 3
- Adding and subtracting on number line word problems
- Adding multiple 2-digit numbers word problems
- Adding up to four 2-digit numbers word problems
- Addition and subtraction word problems: gorillas
- Addition and subtraction word problems: superheroes
- Addition word problem: horses
- Addition word problems within 100
- Multi step addition word problem
- Multi-step subtraction word problem
- Subtraction word problem: basketball
- Subtraction word problem: crayons
- Subtraction word problems within 100
- Word problems with "more" and "fewer" 1
Demonstrate fluency with addition and subtraction within 20 by applying reasoning strategies (e.g., doubles, near doubles, make-a-ten, compensations, inverse relationships).
- Add & subtract within 20
- Add within 20
- Add within 20 visually
- Adding 7 + 6
- Adding 8 + 7
- Adding within 20 using place value blocks
- Adding within 20 using ten frames
- Addition and subtraction word problems: superheroes
- Subtract within 20
- Subtract within 20 using a number line
- Subtract within 20 using place value blocks
- Subtract within 20 using ten frames
- Subtract within 20 visually
- Subtracting 14 - 6
Recall with automaticity addition and subtraction facts within 20.
Use patterns, models, and strategies to make generalizations about the algebraic properties for fluency (e.g., 4 + 3 is equal to 3 + 4; 0 + 8 = 8).
Determine the missing number in an equation (number sentence) through modeling and justification with addition and subtraction within 20 (e.g., 3 + __ = 5 or __ + 2 = 5; 5 – __ = 3 or 5 – 2 = __).
- Add & subtract within 20
- Add within 100 using a number line
- Add within 100 using place value blocks
- Add within 20
- Add within 20 visually
- Adding 7 + 6
- Adding 8 + 7
- Adding within 20 using place value blocks
- Adding within 20 using ten frames
- Addition and subtraction word problems: gorillas
- Addition and subtraction word problems: superheroes
- Find the missing number (add and subtract within 100)
- Missing numbers in addition and subtraction
- Subtract 2-digit numbers (no regrouping)
- Subtract within 100
- Subtract within 20
- Subtract within 20 using place value blocks
- Subtract within 20 visually
- Subtracting 14 - 6
Use inverse relationships to write all related facts connected to a given addition or subtraction fact model within 20 (e.g., given a model for 3 + 4 = 7, write 4 + 3 = 7, 7 – 4 = 3, and 7 – 3 = 4).
Describe the not equal symbol (≠) as representing a relationship where expressions on either side of the not equal symbol represent different values and justify reasoning.
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Represent and justify the relationship between values and expressions as equal or not equal using appropriate models and/or symbols (e.g., 9 + 24 = 10 + 23; 45 – 9 = 46 – 10; 15 + 16 ≠ 31 + 15).
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