A method used to solve a problem or equation.

A graphical display of data using bars of different heights; another name for a bar graphs.

Use efficient strategies to solve problems

Maths

In this unit pupils will add and subtract 1s and 10s from 2 digit numbers. They will use number facts to add/subtract a single-digit number to/from a 2-digit number. They will use a part-part-whole model to represent addition and subtraction. In the future unit pupils will learn to find 10 more or less than a 2-digit number They will  add and subtract 10 to/from a 2-digit number using number facts

In the prior unit pupils added 3 addends. They used strategies such as finding 2 addends to total 10 or 2 numbers to bridge though 10. In this unit pupils will add and subtract 1s and 10s from 2 digit numbers. They will use number facts to add/subtract a single-digit number to/from a 2-digit number. They will use a part-part-whole model to represent addition and subtraction.

Adding and subtracting ones and tens to and from 2-digit numbers

Alex’s sunflower is 5 cm shorter than Sam’s. What strategy can Alex use to find how tall his sunflower is?

There were 43 woodlice under a log. 8 woodlice crawled out. How many woodlice are left under the log? Which equation represents this problem?

I had 39 seeds in the packet and I put in 30 more. How many seeds do I have altogether? {{ }} seeds

Look at the data in the table. There is a difference of 10 between two of the groups of birds. Which two groups of birds have a difference of 10?

Sam saw 5 more blackbirds to add to the total. How many blackbirds did Year Two see altogether? {{ }}

Year Three saw 6 fewer pigeons than Year Two. How many pigeons did Year Three see?

67 can be partitioned in different ways. Match the multiple of 10 with another number that sums to 67

Which equation will come next in the pattern?

Which of these equations show that 92 has been correctly partitioned into three parts? 

Which of these equations show that 55 has been correctly partitioned into three parts? 

What is the missing addend in this equation? 74 = 40 + {{ }} + 30 

What is the missing addend in this equation? 38 = {{ }} + 30 + 2 

This lesson will be removed by end of Summer Term 2025.

Use efficient strategies to solve problems

Lesson outcome

This lesson will be removed by end of Summer Term 2025.