ON Grade 3 Math Curriculum
Give your child the support they need to keep up with Ontario Grade 3 math. Our lessons and practice problems follow exactly what is taught in Ontario classrooms, from number sense to geometry.
About Grade 3 Ontario math
Ontario Grade 3 math follows The Ontario Curriculum, organized around Number, Algebra, Data, Spatial Sense, and Financial Literacy. Students work on reading and representing whole numbers to 1000, multiplication and division facts, fractions, patterning, data collection and graphing, measurement of length, area, mass, and capacity, and sorting three-dimensional objects. StudyPug provides video lessons and practice problems matched to each of these strands so your child can get help the moment they need it.
- Strands covered: Number, Algebra, Data, Spatial Sense, and Financial Literacy
- Step-by-step lessons and practice problems for every Grade 3 topic
- Aligned to The Ontario Curriculum for Grade 3 math
- Accessible on any device, any time, at your child's own pace
Curriculum topics by strand
Browse lessons and practice problems organized by strand, aligned to The Ontario Curriculum for Grade 3 math.
Ontario Grade 3 Math Topics
- Number - Whole Numbers to 1000: Reading, representing, composing, decomposing, comparing, ordering, rounding, and counting whole numbers up to 1000, including place value with base ten materials.
- Number - Fractions and Fair Sharing: Solving fair-share problems, using equivalent fractions involving halves, fourths, eighths, thirds, sixths, fifths, and tenths, and connecting numerators to repeated addition of unit fractions.
- Number - Multiplication and Division: Recalling multiplication facts for 2, 5, and 10, using properties of operations, representing multiplication up to 10 x 10 and division up to 100 divided by 10, and solving problems involving groups of one half, one fourth, and one third.
- Number - Addition and Subtraction: Using mental math and estimation to add and subtract whole numbers up to 1000, applying algorithms, and solving problems with a variety of tools.
- Number - Ratios and Scaling: Using the ratios 1 to 2, 1 to 5, and 1 to 10 to scale up numbers and solve problems.
- Algebra - Patterns: Identifying, creating, translating, and extending repeating and growing patterns, using shapes, numbers, and tables of values, and describing how patterns illustrate relationships among whole numbers.
- Algebra - Equations and Variables: Using variables in context, determining whether sets of expressions are equivalent, and identifying equivalent relationships for whole numbers to 1000.
- Algebra - Coding: Writing and executing code involving sequential, concurrent, and repeating events, and reading and altering existing code.
- Data - Collection and Organization: Sorting data by two and three attributes using tables and logic diagrams, collecting data through observations and interviews, and organizing data in frequency tables.
- Data - Graphs and Analysis: Displaying data in pictographs and bar graphs with many-to-one correspondence, determining mean and mode, and drawing conclusions from data presented in various ways.
- Data - Probability: Describing likelihood using mathematical language and making predictions, including testing predictions about mean and mode across different populations.
- Spatial Sense - 3D Objects and 2D Shapes: Sorting, constructing, and identifying cubes, prisms, pyramids, cylinders, and cones by faces, edges, vertices, and angles, and composing and decomposing structures.
- Spatial Sense - Location and Movement: Giving and following multistep instructions involving distances and half- and quarter-turns.
- Spatial Sense - Measurement: Estimating, measuring, and comparing perimeters, lengths in millimetres through kilometres, capacity, mass, area in square centimetres and square metres, and telling time in hours, minutes, and seconds.
- Financial Literacy: Estimating and calculating change for cash transactions involving whole-dollar amounts and amounts under one dollar.
How StudyPug Helps Ontario Grade 3 Math Students
When your child gets stuck on a concept like multiplication facts, equivalent fractions, or reading a bar graph, they can go straight to the matching StudyPug lesson rather than waiting until the next school day. Each lesson walks through the idea step by step, and practice problems let them check their understanding right away. You can also try a grade 3 math quiz to see where your child stands across the Ontario curriculum strands.
StudyPug covers the full progression of Ontario math. If your child needs a refresher on earlier material, the grade 2 math curriculum Ontario page shows what was covered the year before, so you can fill any gaps without guessing.
Aligned to Ontario Grade 3 Math Curriculum
Every lesson and practice problem on StudyPug is built around The Ontario Curriculum expectations for Grade 3 math, covering all five strands: Number, Algebra, Data, Spatial Sense, and Financial Literacy. When your child moves into Grade 4, the Ontario Grade 4 math curriculum continues from exactly where Grade 3 leaves off, so their StudyPug account grows with them through each year of school.
Written by the StudyPug Math Team
Last updated June 5, 2026
3 M+
students
★★★★★
4.8 average
K-12
all grades