To separate or take one number away from another.

The result of subtracting one number from another. 

The first number in a subtraction; the number from which another number (the subtrahend) is to be subtracted.

The number that is to be subtracted; the second number in a subtraction.

Use number pairs to 10 in subtraction contexts

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

Sam collected 10 conkers. 
She put 7 in her bag and the rest in her pocket. 
Which part part whole model matches the problem?

Which number fact to 10 will help to find the missing part in this part part whole model?

What is the missing number on the number line?

Match the missing number to the equation.

Sam places 5 counters on the tens frame and uses it to complete the equation. 10 = 5+___
What is the missing addend in the equation? 

There are 10 beads on the bead string, but some are hidden. How many are hidden?  

Ten cannot be partitioned into two odd numbers.

Ten cannot be partitioned in one odd and one even number.

Ten cannot be partitioned in two even numbers.

Sam says 4 + 5 definitely cannot sum to 10.
How does she know?

Jacob buys two toys in the toy shop and spends 10 pounds. One of his toys cost 1 pound. what was the price of the other toy?

Match the expressions to the correct statement.

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

This lesson will soon be taken down.

Use number pairs to 10 in subtraction contexts

Lesson outcome