Number

Worked examples (5)

• 1Ordering a list of integers
• 2Tidying a chain of signed numbers
• 3Multiplying a chain of negatives
• 4BIDMAS with brackets and an index
• 5A multi-step integer challenge

Worked examples (5)

• 1Listing all the factors of a number
• 2Common multiples by listing
• 3Prime factorisation using a factor tree
• 4HCF from prime factorisation
• 5LCM in a real situation

Worked examples (5)

• 1Evaluating a small power
• 2A square and its root
• 3Using the multiplication law
• 4An index on a negative base
• 5Combining the index laws

Worked examples (5)

• 1Writing a large number in standard form
• 2Writing a small number in standard form
• 3Multiplying two numbers in standard form
• 4Dividing two numbers in standard form
• 5Adding two numbers in standard form

Worked examples (5)

• 1The value of a digit
• 2Multiplying by a power of 10
• 3Rounding to 2 decimal places
• 4Rounding to significant figures
• 5Estimation to check a calculator answer

Worked examples (5)

• 1Converting a fraction to a decimal and a percentage
• 2Adding fractions with different denominators
• 3Dividing two fractions
• 4Finding a percentage of an amount
• 5Working out a percentage change

Worked examples (5)

• 1Simplifying a ratio
• 2Sharing in a ratio
• 3Using direct proportion
• 4Using inverse proportion
• 5Using a three-part ratio