A decimal number has a decimal point followed by digits that show the fractional part.

Partitioning is the act of splitting an object or value down into smaller parts..

An equation is used to show that one number, calculation or expression is equal to another. For example: 3 + 4 = 7

An expression contains one or more values, where each value is separated by an operator. For example: 3 + 4

Explain that decimal numbers with tenths can be composed additively

Maths

Explain that decimal numbers with tenths can be composed multiplicatively

Use known facts and mental strategies to calculate with decimal numbers within and across a whole

Use knowledge of column addition and subtraction to calculate with decimal numbers

Use representations to round a decimal number with tenths to the nearest whole number

In this unit pupils will calculate with decimal numbers using column addition and subtraction. In the future unit pupils will identify hundredths as part of a whole and describe and represent hundredths as a decimal fraction. They will compare and order decimal numbers with hundredths.

In the prior unit pupils identified tenths as part of a whole and describe and represented tenths as a decimal fraction. They counted tenths in different ways and compared and ordered decimal numbers with tenths. In this unit pupils will calculate with decimal numbers using column addition and subtraction.

In this unit pupils will extend their understanding of formal calculation strategies to use column methods to add and subtract with decimal numbers.

Compose and calculate with decimals including column addition and subtraction

An equation is used to show that one number, calculation or expression is equal to another.

Factors are numbers which divide exactly into another number.

The product is the result of two or more numbers multiplied together.

Simple calculations using two numbers are known as number facts. For example 2 + 4 = 6

Bridging is a mental strategy which uses addition or subtraction to cross a number boundary.

The process of unitising and exchanging between place values is known as regrouping. For example: ten ones can be regrouped for one ten.

The value of a digit in a number based on where it is placed.

A multiple is the result of multiplying a number by an integer. For example 2 × 5 = 10 so 10 is a multiple of 2 and 5.

Something that comes after something else.

Something that comes before something else.

Rounding means making a number simpler but keeping its value close to what it was.

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Compose and calculate with decimals including column addition and subtraction

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