In this Year 3 Partition Numbers to 100 lesson, children recognise the place value of each digit in a three-digit number (hundreds, tens, ones)
The Year 3 Partition Numbers to 100 PowerPoint guides both teachers and children through the lesson, including use of the varied fluency, reasoning and problem solving, deeper reasoning and scaffolded resources. Key learning information about this step:
Key Vocabulary
flexible partitioning: The splitting of a number into different parts in different ways. For example: the number 64 could be broken down into 5 tens and 14 ones.
partitioning: The splitting of a number into different parts. For example: the number 547 can be partitioned into 500, 40 and 7.
part-whole model: A representation showing the whole number and the parts it has been split into.
placeholder: 0 is used to hold a place in a number and maintain its place value.
representation: A number that has been shown in different ways. For example, in numerals, words or using equipment such as Base 10 or a place value chart.
Varied Fluency
Knowledge Organiser
• Designed to support all children via key information and examples.
Scaffolded Examples
Partitioning into tens and ones; partitioning flexibly using Base 10.
Support
• Q1: Read Base 10 in a part-whole model, with sentence stems before applying to addition calculations.
• Q2: Match numbers to partitions that are written as tens then ones.
• Q3: Partition flexibly with Base 10 shown in the whole and one part - multiple of 10.
Core
• Q1: Read Base 10 in a part-whole model and complete calculations.
• Q2: Match numbers to partitions; combination of tens and ones and ones and tens.
• Q3: Partition flexibly with Base 10 shown in the whole and one part only; need to find the multiple of 10.
Stretch
• Q1: Find the whole from Base 10 that needs an exchange; partition it two ways.
• Q2: Match numbers to flexible partitions that need an exchange.
• Q3: Partition flexibly with no Base 10 given; parts are not multiples of 10.
Reasoning and Problem Solving
Support
• Q1: Reasoning - decide whether a partition into tens and ones is correct; Base 10 shown in the parts of the part-whole model. Step by step explanation.
• Q2: Reasoning - find and explain a mistake when matching numbers to partitions; all partitions written as tens then ones.
• Q3: Problem Solving - partition a 2-digit number into two parts where one part is a multiple of 10; Base 10 shown in the whole and one possibility completed.
Core
• Q1: Reasoning - decide whether a partition into tens and ones is correct; Base 10 shown in the parts of the part-whole model.
• Q2: Reasoning - find and explain a mistake when matching numbers to partitions; partitions written as tens then ones and as ones then tens.
• Q3: Problem Solving - partition a 2-digit number into two parts where one part is a multiple of 10; Base 10 shown in the whole.
Stretch
• Q1: Reasoning - decide whether a flexible partition involving an exchange is correct; no base ten given.
• Q2: Reasoning - find and explain a mistake when matching numbers to flexible partitions that need an exchange.
• Q3: Problem Solving - partition a 2-digit number into two parts where neither part is a multiple of 10; no Base 10 given.
Deeper Reasoning
The questions in this set focus on completing part-whole models using Base 10 to deepen understanding in recognising the place value of each digit in a three-digit number.
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This lesson is designed to align to White Rose Maths version 3. Classroom Secrets Limited is not affiliated with, endorsed by, or in any way connected to White Rose Education Limited. Our products are original to Classroom Secrets Limited and any reference to White Rose Maths is solely for the purpose of indicating compatibility and does not imply any association with White Rose Education.
