# How to do maths

## Maths with Mr Mullen

### Place Value

How to read and write large numbers

https://youtu.be/DKZ6udSI6Ew

How to partition numbers.

https://youtu.be/ocEagFKJ054

How to partition numbers in different ways.

https://youtu.be/GYeSA3k97Ts

How to count in tens, hundreds and thousands.

https://youtu.be/9BkKcdKShK0

How to round numbers to the nearest 10, 100, 1,000, 10,000 and 100,000.

https://youtu.be/pZsbXpym6_g

How to read and write Roman numerals

Understanding negative numbers

### The Four Operations

https://youtu.be/TGZ7oHCJkxs

Subtraction

How to do column subtraction.

https://youtu.be/GmoY6-_MsJ4

How to add and subtract decimals

https://youtu.be/Ta6ruTbDV0g

How to solve worded problems associated with addition and subtraction

Multiplication

How to multiply three numbers together

How to multiple by multiples of 10

How to find the lowest common multiple

How to find factors

How to find the highest common factor

How to do short multiplication

https://youtu.be/TEnRp_Wqssw

How to do long multiplication.

How to multiply whole numbers by decimal numbers

How to solve worded problems for multiplication and division

Division

How to do short division

https://youtu.be/vwD1vIX7A_0

How to do short division and write the answers as decimal numbers or mixed numbers

How to use short division to divide decimal numbers

How to do long division.

How to multiply and divide by 10, 100 and 1000

https://youtu.be/oFY3oj-tD0Y

Inverse operations

Multiplication and division

Fractions

How to change from a improper fraction to a mixed number.

How to change from a mixed number to an improper fraction.

How to add and subtract fractions with different denominators.

How to add and subtract mixed numbers. Example One

How to add and subtract mixed numbers and fractions. Example Two

In this example, we show you how to convert your answer from an improper fraction back into a mixed number and then simplify the fraction.

How to multiply fractions

https://youtu.be/BhSOoHKxpYg

How to multiply a fraction by a whole number, a fraction by a mixed number and a mixed number multiplied by a whole number

How to divide fractions

https://youtu.be/VRYQR-ht-Oo

How to find a fraction of a number

How to change a fraction into its equivalent decimal.

How to work out equivalent fractions

How to simplify fractions.

How to count in fractions - with and without a fraction number line

Decimals

The place value of decimals.

How to read and write decimal numbers as fractions and vice versa.

How to order decimals

How to round decimals.

How to read decimals on a number line.

Order of operations

How to solve number sentences that contain different operations. Follow the correct order of operations - use BODMAS / BIDMAS.

Percentages

Understanding percentages

How to find percentage of amounts (10% and multiples of 10%)

How to find percentage of amounts (more challenging)

How to solve percentage problems

How to change between fractions, decimals and perecentages

Algebra

Algebra and inequalities

https://youtu.be/jezPOgrggs0

Number Sequences

### Geometry

Parallel and perpendicular lines

How to calculate angles on a straight line and around a point

How to calculate angles in a triangle

### Measurement

How to calculate perimeter

How to work out the area by counting squares and how to work out the area of a rectangle

I

How to change between different units of length

How to change between different units of mass and different units of capacity