Mathematics, Grade 3

Unit 1: Number

Skip-counting to 1000, numbers to 1000 and place value, mental addition and subtraction, addition and subtraction to 1000, first multiplication and division to products of 36, and fractions of a whole.

• Skip-counting by 5s, 10s, and 100s
• Skip-counting by 3s and 4s
• Skip-counting by 25s

• Showing numbers to 1000
• Comparing and ordering to 1000
• Hundreds, tens, and ones

• Mental math for adding two 2-digit numbers
• Mental math for subtracting two 2-digit numbers
• Estimating sums and differences

• Adding numbers to 1000
• Subtracting numbers to 1000

• Doubles and making 10
• The commutative and zero properties
• Thinking addition for subtraction

• Multiplication as equal groups
• Solving multiplication problems
• Division as sharing and grouping
• Relating division to multiplication

• A fraction is part of a whole
• Where fractions are used
• Comparing fractions with the same bottom number

Unit 2: Patterns and Relations

Decreasing patterns, and solving one-step addition and subtraction equations with an unknown symbol.

• Describing and comparing decreasing patterns
• Extending and creating decreasing patterns

• Solving one-step equations with a symbol

Unit 3: Shape and Space

Time and the calendar, measuring length in cm and m, mass, perimeter, and sorting polygons.

• Time for everyday activities
• Seconds, minutes, hours, and days

• Referents for centimetres and metres
• How centimetres and metres relate
• Estimating length with referents
• Measuring and recording length

• Measuring mass in grams and kilograms
• Perimeter of shapes
• Sorting polygons by sides

Unit 4: Statistics and Probability

Collecting and organizing first-hand data with tally marks, line plots, charts, and lists.

• Collecting and organizing first-hand data