##### apply the four operations, including formal written methods, to integers, decimals and simple fractions (proper and improper), and mixed numbers – all both positive and negative

- Adding Integers
- Subtracting Integers
- Multiplying Integers
- Dividing Integers (single digit)
- Dividing Integers (long division)

- Adding Decimals
- Subtracting Decimals
- Multiplying Decimals
- Dividing Decimals (integer divisor)
- Dividing Decimals (short division)
- Dividing Decimals (long division)

- Dividing Fractions
- Multiplying Fractions
- Subtracting Fractions
- Adding Fractions
- Fractions – All Operations

##### understand and use place value (e.g. when working with very large or very small numbers, and when calculating with decimals)