Column addition is a way of adding numbers by writing a number below another.

The process of unitising and exchanging between place values is known as regrouping. For example, 10 tens can be regrouped as one hundred and one hundred can be regrouped as 10 tens.

Add up to 3 four-digit numbers using column addition

Maths

Subtract 4-digit numbers using column subtraction

Pupils use strategies to make solving calculations more efficient

Explain how many '500s' and '250s', 1,000 is composed of

Explain how many '100s' and '200s', 1,000 is composed of

In this 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 future unit pupils will use their knowledge to calculate with decimal numbers using column addition and subtraction.

In the prior unit pupils revisited column addition with regrouping and column subtraction with exchanging to solve problems. They read Roman numerals to 100. In this 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 this 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.

Column addition and subtraction with 4-digit numbers

Column subtraction is a way of subtracting numbers by writing a number below another.

The process of unitising and exchanging between place values is known as regrouping.

Working efficiently means finding a way to solve a problem quickly whilst also maintaining accuracy.

The composition of the whole is the way in which it is made.

The result of multiplying a number by another whole number.

Equal divisions refer to equal spacing on a number line or scale.

Equal divisions can be found on a number line or scale for equal values.

We find a value that is close enough to the right answer, usually with some thought or calculation involved.

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Column addition and subtraction with 4-digit numbers

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