In this unit, students learn about the place value of 3-digit numbers (up to 120), deepening their understanding that the value of a digit depends on its place. The unit begins with a revision of the part-part-whole concept before moving on to how 3-digit numbers (up to 120) can be created and partitioned. Students explore the link between a number’s name, digits and its composition. There is a strong focus on using proportional equipment to represent and model numbers.
Partition one- and two-digit numbers in different ways using physical and virtual materials, including partitioning two-digit numbers into tens and ones
Count collections to 100 by partitioning numbers using place value
Describes mathematical situations and methods using everyday and some mathematical language, actions, materials, diagrams and symbols
Uses objects, diagrams and technology to explore mathematical problems
Supports conclusions by explaining or demonstrating how answers were obtained
Applies place value, informally, to count, order, read and represent two- and three-digit numbers
Reasons about representations of whole numbers to 1000, partitioning numbers to use and record quantity values
Count collections to 100 by partitioning numbers using place value