Virginia SOL 1.CE.1
SOL Standard (Knowledge and Skills Cluster)
The student will recall with automaticity addition and subtraction facts within 10 and represent, solve, and justify solutions to single-step problems, including those in context, using addition and subtraction with whole numbers within 20.
Virginia Standards of Learning for Mathematics
Cluster contents
Knowledge and Skills in This Standard
1.CE.1 is a Standards of Learning standard. These are the knowledge and skills expectations under it.
- 1.CE.1.a
Recognize and describe with fluency part-part-whole relationships for numbers up to 10 in a variety of configurations.
- 1.CE.1.b
Demonstrate fluency with addition and subtraction within 10 by applying reasoning strategies (e.g., count on/count back, one more/one less, doubles, make ten).
- 1.CE.1.c
Recall with automaticity addition and subtraction facts within 10.
- 1.CE.1.d
Investigate, recognize, and describe part-part-whole relationships for numbers up to 20 in a variety of configurations (e.g., beaded racks, double ten frames).
- 1.CE.1.e
Solve addition and subtraction problems within 20 using various strategies (e.g., inverse relationships: if 9 + 3 = 12 then 12 - 3 = 9; decomposition using know...
- 1.CE.1.f
Represent, solve, and justify solutions to single-step addition and subtraction problems (join, separate, and part-part-whole) within 20, including those in con...
- 1.CE.1.g
Determine the unknown whole number that will result in a sum or difference of 10 or 20 (e.g., 14 - __ = 10 or 15 + __ = 20).
- 1.CE.1.h
Identify and use (+) as a symbol for addition and (-) as a symbol for subtraction.
- 1.CE.1.i
Describe the equal symbol (=) as a balance representing an equivalent relationship between expressions on either side of the equal symbol (e.g., 6 and 1 is the ...
- 1.CE.1.j
Use concrete materials to model, identify, and justify when two expressions are not equal (e.g., 10 - 3 is not equal to 3 + 5).
- 1.CE.1.k
Use concrete materials to model an equation that represents the relationship of two expressions of equal value.
- 1.CE.1.l
Write an equation that could be used to represent the solution to an oral, written, or picture problem.
Teacher's field guide
What This Cluster Means
What Students Need to Do
- Students quickly recall sums and differences through 10. They use objects, drawings, and equations to solve one step addition and subtraction situations through 20. They explain parts and wholes, missing numbers, and why both sides of an equation have the same value.
What Mastery Looks Like
- A student answers addition and subtraction facts through 10 accurately without counting every object. The student chooses a useful strategy for problems through 20 and writes a matching equation. They find missing numbers and use a model or explanation to show whether an equation is true.
Common Misconceptions
- Students may treat the equal sign as a signal to write an answer instead of showing equal values. They may confuse joining, separating, and finding a missing part. Some count every item from one or think 3 − 7 has the same answer as 7 − 3.
How to Assess It
- Exit ticket: “Mia has 14 cubes. Six are blue and the rest are red. How many are red?” Require a drawing, an equation, and one sentence explaining the strategy.
Lesson moves
Ways to Teach It
Give pairs 20 counters and double ten frames to build 16 in two parts, then record related addition and subtraction equations.
Ask students whether 7 + 2 = 6 + 3 is true, then have them draw both sides and defend their answer.
Play Fact Match with cards showing equations, answers, and ten frame pictures, with students collecting triples that show the same value.
Set up a class store with 20 play coins, then have students solve buying and spending stories with drawings and equations.
Free download
Printable 1.CE.1 Worksheet
A ready-to-print activity worksheet aligned to 1.CE.1, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
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Related Standards
- 3.CE.2
The student will recall with automaticity multiplication and division facts through 10 × 10; and represent, solve, and justify solutions to single-step contextu...
- K.CE.1
The student will model and solve single-step contextual problems using addition and subtraction with whole numbers within 10.
- 2.CE.1
The student will recall with automaticity addition and subtraction facts within 20 and estimate, represent, solve, and justify solutions to single-step and mult...
- 4.CE.2
The student will estimate, represent, solve, and justify solutions to single-step and multistep problems, including those in context, using multiplication with ...
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