Year 5 Column Addition and Subtraction: lesson and practice

By the end of this chapter you will be able to

• Add numbers with up to 6 digits using the column method, including carrying, zeros and numbers of different lengths
• Subtract numbers with up to 6 digits using the column method, including exchanging across zeros
• Add more than two numbers in columns
• Add and subtract in your head with big numbers by partitioning, bridging, compensating, using number facts and near doubles
• Round to estimate and to check answers, and choose how accurate an answer needs to be
• Use the inverse operation to check, and to find missing numbers and missing digits
• Solve multi-step problems with bar models, tables, charts, timetables and bank statements, and explain which method to use

You should already know

• Adding and subtracting numbers with up to 4 digits in columns
• Mental strategies: bridging, compensating and near doubles
• Estimating by rounding to the nearest 10, 100 and 1,000
• Bar models for part-whole and comparison problems
• Place value to 1,000,000 (Chapter 1)

Where this leads

• Multiplication (Chapter 4) and division (Chapter 5)
• Decimals and money (Chapter 7)
• Statistics: tables and line graphs (Chapter 11)
• Order of operations and long multiplication in Year 6