Lesson Five – Sum Errors
This maths teaching pack for Key Stage Two gets the children to identify and correct some different errors in example columnar addition calculations when working with pairs of three digit numbers.
The class can explain and model how to exchange ten ones for one ten or ten tens for one hundred when correcting each of the number calculations to identify the sum errors.
Download this teaching pack including a lesson plan, classroom activities and an interactive presentation to identify and correct some different errors in example columnar addition calculations when working with pairs of three digit numbers
Activities in this teaching pack include a differentiated set of worksheets to record how to add the correct numbers to complete different columnar addition calculations using pairs of two digit numbers for support ability levels and three digit numbers for core and extension ability levels with exchange between place value.
The interactive presentation gets the children to explore how to correct errors in different columnar addition calculations using pairs of three digit numbers.
This lesson is part of a maths scheme of work to get the children to practise using mental and written calculation methods to add three digit numbers with one, two and three digit numbers including informal and formal columnar techniques with exchange between place value. There are teaching activities for shared learning, differentiated worksheets to support independent learning and interactive presentations to introduce concepts and key skills.
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