Review adding 2-digit numbers using column addition without regrouping

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 is the sum in this column addition? 

What ones digit is missing from this column addition? 

What tens digit is missing from this column addition? 

Which two addends would make this column addition correct?

Which addend would make this column addition correct?

What is the value of the digit 8 in the number 83?

What 2-digit number could be made using the arrow cards?

Which expression matches the Base 10 blocks representation?

Alex is trying to calculate the sum of 36 and 12 using column addition. Which column addition has he set out correctly?

Alex is trying to calculate forty-five add twenty-three. Which column addition has he set out correctly?

Which equations match the column addition?

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