Use known facts and strategies to accurately and efficiently calculate and check column addition
I can use known facts and strategies to efficiently calculate and check column addition.
- Year 3
Use known facts and strategies to accurately and efficiently calculate and check column addition
I can use known facts and strategies to efficiently calculate and check column addition.
Lesson details
Key learning points
- Consider each calculation to see whether column addition is the most efficient method to use.
- Use strategies to help check calculations.
- Use estimation to give a value close to the correct answer.
Keywords
Efficient - Being efficient means finding a way to solve a problem quickly whilst also maintaining accuracy.
Estimate - Estimation means to find a value that is close enough to the right answer, usually with some thought or calculation involved.
Regroup - The process of unitising and exchanging between place values is known as regrouping.
Common misconception
Pupils may struggle with estimation, especially with thinking of numbers that are quick and easy to calculate with.
Pupils will probably have little or no experience of rounding but they will be able to think about the place value of numbers and give tens or hundreds numbers that are close. Number lines may be helpful for some children.
Licence
Lesson video
Loading...
Prior knowledge starter quiz
6 Questions
Q1.Where will regrouping be needed in this column addition?
Q2.Where will regrouping be needed in this column addition?
Q3.Jun has started this column addition. Complete it to find the sum.
Q4.What is the missing sum?
Q5.What is the missing tens digit?
Q6.What is the missing addend?
Assessment exit quiz
6 Questions
Q1.What is the missing tens digit in the second addend in the column addition?
Q2.What could the missing digits be in the column addition?
Q3.What is the sum of the two numbers?
