The result of adding two or more numbers.

Two together, often with something in common.

Any whole number that cannot be put into pairs.

Any whole number that can be put into pairs.

Find pairs of numbers that sum to 10

Maths

In this unit pupils will explain that addition is commutative. They will find pairs of numbers to 10 and add or subtract 1 from any number.  In the future unit pupils will demonstrate their fluency of addition and subtraction within ten. They will practise addition and subtraction strategies.

In prior learning, pupils will have learnt to count confidently and have developed a deep understanding of the numbers to 10, the relationships between them and the patterns within those numbers. In this unit pupils will explain that addition is commutative. They will find pairs of numbers that total 10 and add or subtract 1 to and from any number to 10.

Addition and subtraction facts within 10

There are 10 counters altogether. Some are in the hand. How many counters are in the hand?

There are 10 beads altogether. How many are covered up? {{ }} beads are covered up.

How has Sam partitioned 10 in this representation?
10 = _ + _

Which equation matches the part-part-whole representation? 10 is the whole ...

Which pair of number shapes has a total of ten?

Match the expressions to show whether they sum to 10, greater than 10 or less than 10

Jacob writes this equation to represent the picture.  3 + 5 = 8
Which of the following equations shows the addends were combined in a different order?


Match to show the addends that have been combined in a different order.

Which equation shows that addition is commutative?

The addends in an equation are 3 and 6. Fill in the missing numbers below to show that, when combined, these addends are equal.

Yes, she can write any number to complete the equation.

Yes, but the same number must be used for both sides of the equation

Sam says she can write any number as the missing addends. Is she right?  ___ + 4 = 4 + ___

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Find pairs of numbers that sum to 10

Lesson outcome