Review column addition and identify the addends and sum

Maths

In this unit pupils will revisit column addition with regrouping and column subtraction with exchanging to solve problems. They will read Roman numerals to 100. In the future unit pupils will consolidate column addition with regrouping and column subtraction with exchanging to solve problems. They will use known facts and strategies to accurately and efficiently calculate and check.

In the prior unit pupils identified the minuend and the subtrahend in column subtraction and explained the column subtraction algorithm. They subtracted from a 2-digit number using column subtraction with exchanging. In this unit pupils will revisit column addition with regrouping and column subtraction with exchanging to solve problems. They will read Roman numerals to 100.

Review of column addition and subtraction

What are the addends in this column addition? 

What is the sum in this column addition? 

Alex represents the column addition as a bar model to describe the parts and whole. Which bar model shows the correct position of 83?

Look at the column addition. Which statements are correct?

Which equations match the column addition?

What calculation is represented by the Base 10 blocks?

Which numbers in the bar model are the addends? 

Which number in the bar model is the sum?

Which numbers are the addends in this equation? 76 = 22 + 54

What is the sum is this equation? 99 = 55 + 44 

This lesson will soon be taken down.

Review column addition and identify the addends and sum

Lesson outcome