Skills available for Ontario Grade 3 Math Curriculum (2020)

Expectations are in black and skills are in blue.  Click on the name of the skill to practice that skill.

Please check back as we are always adding more content!

3.B Number

3.B1 Number Sense

Whole Numbers
3.B1.1 read, represent, compose, and decompose whole numbers up to and including 1000, using a variety of tools and strategies, and describe various ways they are used in everyday life
3.B1.2 compare and order whole numbers up to and including 1000, in various contexts
3.B1.3 round whole numbers to the nearest ten or hundred, in various contexts
3.B1.4 count to 1000, including by 50s, 100s, and 200s, using a variety of tools and strategies
3.B1.5 use place value when describing and representing multi-digit numbers in a variety of ways, including with base ten materials
3.B1.6 use drawings to represent, solve, and compare the results of fair-share problems that involve sharing up to 20 items among 2, 3, 4, 5, 6, 8, and 10 sharers, including problems that result in whole numbers, mixed numbers, and fractional amounts
3.B1.7 represent and solve fair-share problems that focus on determining and using equivalent fractions, including problems that involve halves, fourths, and eighths; thirds and sixths; and fifths and tenths
Digital Resources
Printable Worksheets

• Exploring Equivalent Fractions

• Writing Equivalent Fractions

• Equal Parts

3.B2 Operations

Properties and Relationships
3.B2.1 use the properties of operations, and the relationships between multiplication and division, to solve problems and check calculations
Math Facts
3.B2.2 recall and demonstrate multiplication facts of 2, 5, and 10, and related division facts
Mental Math
3.B2.3 use mental math strategies, including estimation, to add and subtract whole numbers that add up to no more than 1000, and explain the strategies used
Addition and Subtraction
3.B2.4 demonstrate an understanding of algorithms for adding and subtracting whole numbers by making connections to and describing the way other tools and strategies are used to add and subtract
Digital Resources
Printable Worksheets

• Addition Strategies

• Subtraction Strategies

3.B2.5 represent and solve problems involving the addition and subtraction of whole numbers that add up to no more than 1000, using various tools and algorithms
Multiplication and Division
3.B2.6 represent the multiplication of numbers up to 10 × 10 and division up to 100 ÷ 10, using a variety of tools and drawings, including arrays
3.B2.7 represent and solve problems involving multiplication and division, including problems that involve groups of one half, one fourth, and one third, using tools and drawings
3.B2.8 represent the connection between the numerator of a fraction and the repeated addition of the unit fraction with the same denominator using various tools and drawings, and standard fractional notation
Digital Resources
Printable Worksheets
3.B2.9 use the ratios of 1 to 2, 1 to 5, and 1 to 10 to scale up numbers and to solve problems
Digital Resources
Printable Worksheets

3.C Algebra

3.C1 Patterns and Relationships

3.C1.1 identify and describe repeating elements and operations in a variety of patterns, including patterns found in real-life contexts
Digital Resources
Printable Worksheets

• Exploring Pattern Attributes

3.C1.2 create and translate patterns that have repeating elements, movements, or operations using various representations, including shapes, numbers, and tables of values
Digital Resources
Printable Worksheets

• Exploring Patterns

• Exploring Pattern Attributes – Set 2

3.C1.3 determine pattern rules and use them to extend patterns, make and justify predictions, and identify missing elements in patterns that have repeating elements, movements, or operations
3.C1.4 create and describe patterns to illustrate relationships among whole numbers up to 1000

3.C2 Equations and Inequalities

3.C2.1 describe how variables are used, and use them in various contexts as appropriate
Digital Resources
Printable Worksheets
Equalities and Inequalities
3.C2.2 determine whether given sets of addition, subtraction, multiplication, and division expressions are equivalent or not
Digital Resources
Printable Worksheets
3.C2.3 identify and use equivalent relationships for whole numbers up to 1000, in various contexts
Digital Resources
Printable Worksheets

• Number Fact Families

3.C3 Coding

Coding Skills
3.C3.1 solve problems and create computational representations of mathematical situations by writing and executing code, including code that involves sequential, concurrent, and repeating events
3.C3.2 read and alter existing code, including code that involves sequential, concurrent, and repeating events, and describe how changes to the code affect the outcomes

3.D Data

3.D1 Data Literacy

Data Collection and Organization
3.D1.1 sort sets of data about people or things according to two and three attributes, using tables and logic diagrams, including Venn, Carroll, and tree diagrams, as appropriate
3.D1.2 collect data through observations, experiments, and interviews to answer questions of interest that focus on qualitative and quantitative data, and organize the data using frequency tables
Digital Resources
Printable Worksheets

• ___’s Survey And Results

• Make A Tally Chart

Data Visualization
3.D1.3 display sets of data, using many-to-one correspondence, in pictographs and bar graphs with proper sources, titles, and labels, and appropriate scales
Data Analysis
3.D1.4 determine the mean and identify the mode(s), if any, for various data sets involving whole numbers, and explain what each of these measures indicates about the data
Digital Resources

• Exploring Mean

• Exploring Mode

Printable Worksheets
3.D1.5 analyse different sets of data presented in various ways, including in frequency tables and in graphs with different scales, by asking and answering questions about the data and drawing conclusions, then make convincing arguments and informed decisions

5.D2 Probability

3.D2.1 use mathematical language, including the terms “impossible”, “unlikely”, “equally likely”, “likely”, and “certain”, to describe the likelihood of events happening, and use that likelihood to make predictions and informed decisions
Digital Resources
Printable Worksheets

• What Is the Probability?

3.D2.2 make and test predictions about the likelihood that the mean and the mode(s) of a data set will be the same for data collected from different populations
Digital Resources

• Exploring Likelihood

Printable Worksheets

3.E Spatial Sense

3.E1 Geometric and Spatial Reasoning

Geometric Reasoning
3.E1.1 sort, construct, and identify cubes, prisms, pyramids, cylinders, and cones by comparing their faces, edges, vertices, and angles
3.E1.2 compose and decompose various structures, and identify the two-dimensional shapes and three-dimensional objects that these structures contain
Digital Resources

• 2D Shapes in 3D Objects

Printable Worksheets

• Matching Three-Dimensional Objects

Matching Nets

3D Objects

3.E1.3 identify congruent lengths, angles, and faces of three-dimensional objects by mentally and physically matching them, and determine if the objects are congruent
Digital Resources
Printable Worksheets

• Exploring Symmetry

• Exploring Symmetry – Set 2

• Exploring Congruent Figures

Location and Movement
3.E1.4 give and follow multistep instructions involving movement from one location to another, including distances and half- and quarter-turns

3.E2 Measurement

Length, Mass and Capacity
3.E2.1 use appropriate units of length to estimate, measure, and compare the perimeters of polygons and curved shapes, and construct polygons with a given perimeter
3.E2.2 explain the relationships between millimetres, centimetres, metres, and kilometres as metric units of length, and use benchmarks for these units to estimate lengths
3.E2.3 use non-standard units appropriately to estimate, measure, and compare capacity, and explain the effect that overfilling or underfilling, and gaps between units, have on accuracy
Digital Resources

• Comparing Capacity

Printable Worksheets

• Exploring Capacity

• Exploring Mass and Capacity

3.E2.4 compare, estimate, and measure the mass of various objects, using a pan balance and non-standard units
Digital Resources

• Comparing Mass

Printable Worksheets

• Exploring Mass and Capacity

• Exploring Mass

3.E2.5 use various units of different sizes to measure the same attribute of a given item, and demonstrate that even though using different-sized units produces a different count, the size of the attribute remains the same
Digital Resources

• Various Units of Length

Printable Worksheets

• Matching Measurements

• Exploring Various Units

3.E2.6 use analog and digital clocks and timers to tell time in hours, minutes, and seconds
3.E2.7 compare the areas of two-dimensional shapes by matching, covering, or decomposing and recomposing the shapes, and demonstrate that different shapes can have the same area
Digital Resources

Comparing Area

Printable Worksheets

Shading Areas: Same Yet Different

3.E2.8 use appropriate non-standard units to measure area, and explain the effect that gaps and overlaps have on accuracy
3.E2.9 use square centimetres (cm2) and square metres (m2) to estimate, measure, and compare the areas of various two-dimensional shapes, including those with curved sides