Maths

• What is the purpose of ordering values or numbers?

  To arrange them from smallest to largest
• How do you order numbers with decimals?

  Work through from the largest decimal place
• How do you order fractions with different denominators?

  Make them have the same denominator
• What is the process to compare 56ths and 14 18s?

  Multiply to find a common denominator
• What does the equal symbol represent?

  It shows two values are the same
• What do inequality symbols indicate?

  That one value is not equal to another
• What does an interval represent in mathematics?

  A range of values between two numbers
• How do you estimate a product like 32 * 68?

  Round to one significant figure first
• What does truncating a measurement mean?

  Making it shorter by rounding
• What is the resolution of a ruler?

  1 cm for each centimeter line
• What is the error interval for a measurement of 8 cm?

  0.5 cm, ranging from 7.5 to 8.5 cm
• How is the error interval calculated?

  It's half the accuracy of the measurement
• How do you add numbers using column addition?

  Place them on top of each other and add
• What is the grid method for multiplication?

  Organizing numbers into columns and rows
• How do you perform short division?

  Divide each digit from left to right
• What happens when you add a negative number?

  It's the same as subtracting the positive
• What does subtracting a negative number equal?

  Adding the positive value
• What is the result of multiplying a positive by a negative?

  The answer is negative
• What is the square root of 25?

  5 and -5
• What does BIDMAS stand for?

  Brackets, Indices, Division, Multiplication, Addition, Subtraction
• What is the first step in BIDMAS?

  Calculate anything inside brackets first
• What is a power on a number?

  It indicates how many times to multiply
• What is the whole for percentages?

  100% represents the whole
• How do you convert a decimal to a percentage?

  Multiply by 100
• What is the simplest form of 6/10?

  3/5
• How do you express 64% as a fraction?

  64/100, simplified to 16/25
• What is a recurring decimal?

  A decimal that repeats indefinitely
• How is a recurring decimal represented?

  With a dot above the repeating digit
• What is a reciprocal?

  One divided by that number
• How is a negative power expressed?

  As division instead of multiplication
• What are the key components of finance in GCSE maths?

  • Income: Money earned, usually monthly
  • Salary: Annual pay before tax
  • Expenses: Money spent on necessities
  • Profit: Income minus expenses
  • Personal allowance: £12,570 tax-free in the UK
  • Income tax: 20% on earnings over personal allowance
• How do you calculate income tax on £27,570?

  Pay 20% on £15,000 over allowance
• What is VAT in the UK?

  Value Added Tax, usually 20% on products
• How do you calculate VAT on an £800 laptop?

  £800 divided by 120 times 20
• What happens when a business pays VAT?

  They can claim it back at tax year-end
• How do you calculate a service charge of 10% on £22?

  Multiply £22 by 0.1 and add
• What does debit mean in finance?

  To take money from someone's account
• What does credit mean in finance?

  Money lent that must be paid back
• What happens if you don't pay back credit card debt?

  You're charged a percentage on the amount
• What is a store card?

  A credit card specific to a store