Year 4 Column Addition and Subtraction: lesson and practice

By the end of this chapter you will be able to

• Add numbers with up to 4 digits using the column method, with carrying
• Subtract numbers with up to 4 digits using the column method, with exchanging (including numbers with zeros, like 5,003 − 1,847)
• Add and subtract in your head by partitioning, bridging, compensating, using near doubles and counting up
• Estimate answers by rounding, and check answers using the inverse (opposite) operation
• Use bar models (part-whole and comparison) to solve addition and subtraction problems
• Solve two-step problems with money and measures, deciding which operations to use and why

You should already know

• Adding and subtracting three-digit numbers with the column method
• Number bonds to 10, 20 and 100
• Place value in four-digit numbers (Chapter 1)
• Rounding to the nearest 10, 100 and 1000 (Chapter 1)

Where this leads

• Times tables (Chapter 3)
• Multiplying and dividing (Chapter 4)
• Decimals and money (Chapter 6)
• Length, mass and capacity (Chapter 7)
• Adding and subtracting numbers with more than 4 digits in Year 5