IXL Math - Maine second-grade math standards

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Maine

Skills available for Maine second-grade math standards

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PK-2.A Number

PK-2.A.1 Students understand and use number notation and place value to 1000 in numerals.
PK-2.A.1.a Read and write numbers to 1000 using numerals.
PK-2.A.1.b Recognize the place values of digits in numbers (hundreds, tens, and ones).
PK-2.A.1.c Compare and order one-digit, two-digit, and three-digit numbers.
PK-2.A.2 Students understand and use procedures to add and subtract whole numbers with one and two digits.
PK-2.A.2.a Use and explain multiple strategies for computation.
PK-2.A.2.b Use an operation appropriate to a given situation.
PK-2.A.3 Students recognize unit fractions including 1/2, 1/4, and 1/3.

PK-2.B Data

PK-2.C Geometry

PK-2.C.1 Students recognize, classify, and create geometric figures in two and three dimensions.
PK-2.C.1.a Identify shapes in the physical environment.
PK-2.C.1.b Classify figures as circles, triangles, and quadrilaterals by focusing on their properties.
PK-2.C.1.c Create shapes by using objects to combine and decompose other shapes.
- Geometry: Relate planar and solid figures (Kindergarten - S.4)
- Geometry: Relate planar and solid figures (First grade - J.4)
PK-2.C.2 Students understand how to measure length and capacity and use appropriate units.
PK-2.C.2.a Measure length and capacity by direct and indirect comparison.
PK-2.C.2.b Measure the length and capacity of objects using non-standard units.
PK-2.C.2.c Measure the length of objects to whole inches and centimeters.

PK-2.D Algebra

PK-2.D.1 Students understand how to represent quantities as simple expressions using addition and subtraction.
PK-2.D.1.a Show that any quantity can be represented by multiple equivalent expressions where each represents the quantity ten.
PK-2.D.1.b Know that addition is commutative and apply this understanding in computation and problem-solving.
- Addition: Related addition facts (First grade - B.14)
- Properties: Related addition facts (Second grade - K.1)
PK-2.D.1.c Know that addition and subtraction are inverse operations and apply this understanding in computation and problem-solving.
- Mixed operations: Fact families (First grade - F.3)
- Properties: Fact families (Second grade - K.3)
PK-2.D.2 Students understand that the equal sign means, "is the same as."
- Equations and variables: Identify equations (Third grade - I.1)
PK-2.D.2.a Identify true and false number sentences.
PK-2.D.2.b Describe what makes number sentences true or false and apply this knowledge.
PK-2.D.2.c Find solutions for unknowns in simple open number sentences such as 12 = 4 + [ ].
PK-2.D.3 Students understand how to create, identify, describe, and extend patterns given a pattern or a rule.
PK-2.D.3.a Describe, extend, and create repeating patterns.
PK-2.D.3.b Describe, extend, and create growing patterns.
- Patterns: Growing patterns (Kindergarten - H.3)
- Patterns: Growing patterns (Second grade - D.2)