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.

The sum is the total when numbers are added together.

Partition means splitting a number into smaller parts.

Solving problems involving addition and subtraction

Maths

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 add 3 addends, understanding they can be added in any order, bridging through 10

Review strategies for adding and subtracting across 10

Which two number cards have a difference of 3? 

Which two number cards have a sum of 13? 

Which two number cards have a difference of 5? 

Match the sums to the correct pair of number cards. 

Two numbers have a sum of 23. One of the numbers is 14. What is the other number? 

Which two numbers have a sum of 10 and a difference of 2?

Izzy uses a number line to find the answer to an equation. What has Izzy subtracted altogether? 

Alex has these number cards. He adds together three different cards and gets a sum of 17. What three cards did he add together? 

Match the equations to the correct differences. 

This lesson will soon be taken down.

Solving problems involving addition and subtraction

Lesson outcome