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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

Any of the numbers that are added together.

Not wasting time or effort. An efficient strategy is one we can carry out easily.

A plan or method to achieve a specific goal.

The act of splitting an object or value down into smaller parts.

In this instance, two numbers that sum to make 10

Addition or subtraction that crosses the 10 boundary.

The result of subtracting one number from another. Way in which two or more things we are comparing are not the same.

Way in which two or more things we are comparing are like each other.

To partition one part from another (the subtrahend from the difference), or to decrease an amount by taking an amount away.

The amount which a number is greater or smaller.

Numbers which follow each other in order, without gaps.

Any integer (not a fraction) that cannot be divided exactly by 2    The last digit is 1, 3, 5, 7 or 9

Any integer that can be divided exactly by 2    The last digit is 0, 2, 4, 6 or 8

A graph that uses bars of different heights to represent information.

To imagine a given problem before us in real life.

To communicate mathematical ideas through models.

To choose one of the four operations to solve a problem.

Understand and give meaning to mathematical data.

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Calculating within 20

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