Add and subtract two numbers that bridge through 10

Maths

Add three addends

Use a 'First, then, then, now' story to add three addends

Explain that the addends can be added in any order

Add three addends efficiently

Add three addends efficiently by finding two addends that total 10

Add two numbers that bridge through 10

Compare the number of objects in two sets or difference between two measures.

Calculate the difference

Calculate the difference in different contexts

Explain what the difference is between consecutive numbers

Calculate the difference when information is presented in a pictogram

Calculate the difference when information is presented in a bar chart

Use knowledge of calculating within 20 to solve problems

Use knowledge of calculating within 20 to solve problems involving statistics

In this unit pupils will add 3 addends. They will use a strategy such as finding 2 addends to total 10 or 2 numbers to bridge though 10.  In the future 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 prior unit pupils revisited addition and subtraction within ten. They consolidated addition and subtraction strategies. In this unit pupils will add 3 addends. They will use a strategy such as finding 2 addends to total 10 or 2 numbers to bridge though 10.

In this unit pupils will add 3 addends. They will use a strategy such as finding 2 addends to total 10 or 2 numbers to bridge though 10.

Calculating within 20

Andeep has the equation 9 + 6 = ___    How has he partitioned 6 to be able to bridge through 10?

7 + 5 = 12     How has Laura shown bridging through 10?

When solving 7 + 4 = ? which expression shows that the second addend has been partitioned correctly to bridge 10?

How should 5 be partitioned in each expression to bridge through 10?

How should 5 be partitioned to bridge 10?

14 − 6 = 8    How would the 6 have been partitioned to bridge 10?

What expression does this image show?  7 + {{ }}

This image shows 6 + 8. How should the 8 be partitioned?

Look at this inequality. 2 + 4 + 6 {{ }} 10     Which symbol is missing? <  >  or =

How can 5 be partitioned to help make 10?

Partition 5 in this equation to find the sum. 8 + 5 = {{ }}

Add and subtract two numbers that bridge through 10

Lesson outcome