Understand place value in 3-digit numbers - Teaching Presentation - Year 3

This presentation provides four days of teaching that cover the objectives:

• Develop understanding of place value in 3-digit numbers.
• Add/subtract 1, 10, 100

It includes starter activities, whole class teaching, group activities, practice sheets and mastery questions. It can be used on a variety of interactive whiteboards.

Day 1 Teaching
Children use place value cards to create 3-digit numbers. They then change one card to change the number: turn 45 into 145, which card has changed? Then into 245, which card has changed now? Find ways to make place value additions with 100, 70, 3 and with 400, 50, 6.

Day 2 Teaching
Using place value cards, discuss what happens when you subtract different digits and write the corresponding place value subtractions, e.g. 456 – 6 = 450.

Day 3 Teaching
Children write 246. They add 1, making 247. Ask them to add 10 to 247. Repeat, adding 100 to 257. Each time, check they know which column changed. Look at adding numbers when two columns change.

Day 4 Teaching
Children write a 3-digit number and then subtract 1. Which column changes? Repeat to subtract 10 and 100. Discuss when subtracting 1, 10, or 100 means that two or three columns change.

This teaching is part of Hamilton’s Year 3 Place Value and Money block. Each Hamilton maths block contains a complete set of planning and resources to teach a term’s worth of objectives for one of the National Curriculum for England’s maths areas.