### Adding and subtracting 1-digit numbers to/from 3-digit numbers

This lesson will teach different mental strategies to add and subtract, including regrouping.

15 lessons

This lesson will teach different mental strategies to add and subtract, including regrouping.

This lesson will use known number facts in order to mentally add multiples of 10 to 3-digit numbers

This lesson will use known number facts to mentally subtract multiples of 10 from 3-digit numbers

This lesson applies known number facts and strategies for adding and subtracting to larger numbers

In this lesson we will partition 3-digit numbers in order to add them accurately mentally.

In this lesson we will learn to partition 3-digit in order to subtract them accurately mentally.

This lesson will build on knowledge of the 10 times table in order to estimate by rounding to answer addition questions

This lesson will build on knowledge of the 10 times table in order to estimate by rounding to answer subtraction questions

This lesson will build on knowledge of partitioning and estimating and introduce column addition.

This lesson will look at using column addition when a number requires regrouping in more than one column when adding.

This lesson will build on knowledge of column addition and introduce regrouping for column subtraction.

In this lesson we will focus on column subtraction where regrouping from the hundreds into the tens column is needed.

This lesson will consolidate learning on column subtraction and will practice regrouping across all columns

This lesson will consolidate learning on column addition and subtraction by moving onto applying this knowledge to word problems.

In this lesson we will be answering addition and subtraction word problems which require us to identify the unknown quantity.

Units in Maths

Units in Number

- Number sense and exploring calculation strategies
- Place value
- Graphs
- Addition and subtraction
- Length and perimeter
- Multiplication and division
- Deriving multiplication and division facts
- Time
- Fractions
- Angles and shape
- Measures
- Securing multiplication and division
- Exploring calculation strategies and place value
- Fractions: parts and wholes
- Reasoning with 4-digit numbers
- Addition and subtraction
- Multiplication and division
- Interpreting and presenting data
- Securing multiplication facts
- Fractions
- Time
- Decimals
- Area and perimeter
- Solving measure and money problems
- 2-D Shape and Symmetry
- Position and Direction
- Reasoning with patterns and sequences
- 3D Shape
- Working with fractions
- Taking fractions further
- Reasoning with large whole numbers
- Problem solving with integer addition and subtraction
- Line graphs and timetables
- Multiplication and division
- 2-D shape, perimeter and area
- Fractions and decimals
- Angles
- Fractions, decimals and percentages
- Transformations
- Converting units of measure
- Calculating with whole numbers and decimals
- 2-D and 3-D shape
- Volume
- Problem solving with whole numbers and decimals
- Equivalent fractions
- Integers & Decimals
- Multiplication and division
- Calculation problems
- Fractions
- Missing angles and lengths
- Coordinates and shape
- Fractions
- Decimals and measures
- Percentages and statistics
- Proportion problems
- Extending calculation strategies and additive reasoning

- Factors and multiples
- Measures: Length
- Calculating with whole numbers and decimals
- Problem solving with whole numbers and decimals
- Decimals and measures
- Numbers and numerals
- Fractions and decimals
- Place value
- Multiplication and division: 2, 5 and 10
- Conceptualising and comparing fractions
- Multiplication and division
- Time
- Addition and subtraction
- Numbers within 100
- Addition and subtraction within 20
- Exploring calculation strategies
- Numbers within 6
- Accuracy and estimation
- Area and perimeter
- Converting units of measure
- Measures: Capacity and volume
- Numbers to 10
- Decimals
- Addition and subtraction (applying strategies)
- Integers & Decimals
- Numbers to 20
- Addition and subtraction within 10
- Deriving multiplication and division facts
- Addition and subtraction within 10
- Multiplication and division
- Problem solving with integer addition and subtraction
- Reasoning with patterns and sequences
- Fractions, decimals and percentages
- Measures (2): Capacity and volume
- Numbers 50 to 100 and beyond
- Position and Direction
- Securing multiplication facts
- Addition and subtraction within 6
- Order of operations
- Surds and trigonometry
- Measures: Mass
- Reasoning with large whole numbers
- Indices and standard form
- Exploring calculation strategies and place value
- Reasoning with 4-digit numbers
- Measures (1): Length and mass
- Addition and subtraction word problems
- Numbers to 50
- Volume
- Early Mathematical experiences
- Solving measure and money problems
- Addition and subtraction of 2-digit numbers (regrouping and adjusting)
- Percentages
- Doubling and halving
- Fractions
- Numbers within 10
- Numbers beyond 20
- Depth of numbers within 20
- Multiplication and division: 3 and 4
- Grouping and Sharing
- Length and perimeter
- Numbers within 1000
- Graphs
- Number sense and exploring calculation strategies
- Axioms and arrays
- Numbers within 20
- Exploring calculation strategies within 20
- Manipulating and calculating with fractions
- 2-D shape, perimeter and area
- Addition and subtraction of 2-digit numbers
- Measures
- Calculation problems
- Extending calculation strategies and additive reasoning
- Prime factor decomposition
- Pattern and Early Number
- Numbers within 15
- Addition and subtraction
- Securing multiplication and division
- Money
- Positive and negative numbers
- Addition and subtraction within 20 (comparison)