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Add three addends

Maths

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

Add and subtract 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

Look at the blocks. There are 2 red blocks, 4 yellow blocks and 1 blue block. Altogether, there are {{ }} blocks.

Aisha represents some blocks on a ten frame. Which ten frame represents her description?

This ten frame shows a total of 10
What 3 addends have been added together?

Look at the image. Which numbers are parts and which is the whole?

Which ten frame represents this part-part-whole model?

Match the pairs of numbers that sum to 10

Match the start and end of the sentences correctly.

Match the addition expressions that are commutative.

Look at this bar model. What is the missing part? {{ }}

Which of the equations represent this image?

Add three addends

Lesson outcome