# Unit: Exploring calculation strategies and place value

## Lessons:

10 lessons

### Applying a range of strategies to mentally calculate addition

In this lesson you will use different mental strategies to add two parts.

### Applying a range of strategies to mentally calculate subtraction

In this lesson you will use different mental strategies to calculate subtraction.

### Applying addition and subtraction strategies within context

In this lesson you are given a purpose for adding and subtracting. Can you help?

### Using commutativity and associativity to multiply

In this lesson you will use known facts and the laws of commutativity and associativity to multiply.

### Using doubling or halving to calculate efficiently

In this lesson you will use your doubling and halving skills to efficiently calculate.

### Identifying values in four digit numbers

In this lesson you will extend your knowledge of place value into the thousands place.

### Comparing four digit numbers

In this lesson you will use place value knowledge to compare four digit numbers.

### Comparing and ordering four digit numbers

In this lesson you will use your place value knowledge to compare four digit numbers and put them in order.