Mathematics

Know those Facts!!

Knowing your math facts makes learning other math concepts much easier. Parents, please be sure you are reviewing basic math facts (multiplication and division) with your child on a regular basis.  

Math Curriculum:

Math 3 

*Archdiocesan Curriculum > Grade 3 > Mathematics > Math 3 

Last Updated- August 1, 2025

Overview:Grade 3 mathematics focuses on strengthening students’ fluency with multiplication and division within 100, understanding the properties of operations, and mastering place value concepts with numbers up to 1,000. Students develop strategies to solve multi-step word problems involving the four operations and begin to understand fractions as numbers, laying the foundation for more advanced fractional concepts.

Students also deepen their understanding of measurement by solving problems involving perimeter and area, tell and write time to the nearest minute, and collect, represent, and interpret data in more complex ways. Geometry instruction includes understanding shapes based on their attributes and reasoning about spatial relationships. Throughout all content, students are encouraged to reason precisely and communicate their mathematical thinking clearly while embodying Catholic values of order, truth, and justice.

The clusters below are benchmarked against the Maryland College & Career Ready Standards & Frameworks. Clusters marked (*) below are the most critical areas for this course, which are the foundational content domains students must master to ensure readiness for the next grade.

Operations and Algebraic Thinking

• Represent and solve problems involving multiplication and division.*

• Understand properties of multiplication and the relationship between multiplication and division.*

• Multiply and divide within 100.*

• Solve problems involving the four operations and identify arithmetic patterns.

Number and Operations in Base Ten

• Use place value understanding and properties of operations to perform multi-digit arithmetic.*

• Round numbers to the nearest 10 or 100.

Number and Operations—Fractions

• Develop understanding of fractions as numbers.*

• Understand a fraction as a number on the number line.

• Explain equivalence of fractions and compare fractions by reasoning about their size.

Measurement and Data

• Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects.

• Understand concepts of area and relate area to multiplication and addition.*

• Represent and interpret data.
  
  

Geometry

• Reason with shapes and their attributes.*

• Understand concepts of angle and measure angles.

Mathematical Practices: The nine mathematical practices, below, describe what mathematicians do. However, they also describe important skills outside the math classroom, both in other subject areas and the real world. Students at all levels will develop these skills gradually throughout their time in Archdiocesan schools in grade-appropriate ways. This work should be nearly done every day and for nearly every topic.

Make sense of problems and persevere in solving them.

Reason abstractly and quantitatively.

Construct viable arguments and critique the reasoning of others.

Model with mathematics.

Use appropriate tools strategically.

Attend to precision.

Look for and make use of structure.

Look for and express regularity in repeated reasoning.

Practice mathematics with a Catholic conscience.