Add 3 numbers together using doubles and near doubles

Maths

Add 3 numbers together in different contexts

Numbers can be added in any order

Add three addends by finding pairs that total 10

Add three addends efficiently using a range of strategies

Addition by bridging through 10

Subtracting small numbers

Subtracting to and from 10

Subtracting numbers that bridge through 10

Solving problems involving addition and subtraction

In this unit pupils will be reviewing and securing previous knowledge of add 3 addends, understanding they can be added in any order, bridging through 10. In the future unit pupils will use known facts to find multiples of ten that compose 100  and use known facts to find complements to 100.

In the prior unit pupils learned to find 10 more or less than a 2-digit number. They added and subtracted 10 to/from a 2-digit number using number facts. In this unit pupils will be reviewing and securing previous knowledge of adding 3 addends, understanding they can be added in any order, bridging through 10.

In this unit pupils will be reviewing and securing previous knowledge of adding 3 addends, understanding they can be added in any order and combined in different ways to bridge through 10

Review strategies for adding and subtracting across 10

Addition is commutative. This means the order of the addends can be changed without changing the calculation or sum.

The sum is the total after numbers are added together.

The sum is the total when numbers are added together.

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

Partition means splitting a number into parts.

The minuend is the number being subtracted from.

A subtrahend is a number subtracted from another.

The difference is the result after subtracting one number from another.

Bridge means subtracting to make 10 and then subtracting whatever is left.

Partition means splitting a number into smaller parts.

Review strategies for adding and subtracting across 10

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These lessons were made for home learning during the pandemic.