Everything

• Which topics tend to appear more frequently in exams?

  Algebra, number, and ratio
• What does BIDMAS stand for?

  • B: Brackets
  • I: Indices
  • D: Divide
  • M: Multiply
  • A: Add
  • S: Subtract
• How do you solve the expression 30 - 12 ÷ 6 × 3 - 1² using BIDMAS?

  Follow BIDMAS to get 22
• What is the definition of prime numbers?

  Only have two factors: one and itself
• What are the first ten prime numbers?

  2, 3, 5, 7, 11, 13, 17, 19, 23, 29
• Why is one not considered a prime number?

  It only has one factor, not two
• What are the rules for negative numbers in multiplication and division?

  • Two negatives make a positive
  • A negative and a positive make a negative
• What is the result of multiplying -3 and 6?

  -18
• What is the result of dividing -32 by 4?

  -8
• How do you determine the sign when adding or subtracting negative numbers?

  Follow the rules based on their proximity
• What is the result of -2 - 4?

  -6
• What is the HCF and LCM of 32 and 48?

  HCF is 16, LCM is 96
• How do you find the HCF and LCM using prime factor trees?

  • Create prime factor trees for each number
  • Use a Venn diagram to organize factors
  • HCF: Multiply middle factors
  • LCM: Multiply all factors together
• What is the general form of standard form?

  a × 10^n, where 1 ≤ a < 10
• How do you convert 3 million into standard form?

  3 × 10^6
• How do you convert 4.32 into standard form?

  4.32 × 10^3
• What is 2.71 × 10^5 in normal numbers?

  271,000
• What is 3.6 × 10^-2 in normal numbers?

  0.036
• What are the steps for adding or subtracting standard form numbers?

  1. Ensure powers are the same
  2. Adjust numbers if necessary
  3. Add or subtract the coefficients
  4. Convert back to standard form if needed
• How do you multiply standard form numbers?

  Multiply coefficients and add powers
• What is the first step in adding fractions?

  Find a common denominator
• What is the result of adding 3/7 and 2/8?

  38/56
• What is the result of multiplying 3/7 and 2/5?

  6/35
• What does "Keep Change Flip" refer to in fractions?

  Method for dividing fractions
• What is the result of dividing 5/6 by 3/2?

  5/9
• How do you convert a mixed number to an improper fraction?

  Multiply whole number by denominator, add numerator
• How do you convert 43/7 into a mixed number?

  6 1/7
• What are the key steps for multiplying and dividing decimals?

  • Count decimal places in the question
  • For multiplication, ensure the answer has the same total decimal places
  • For division, multiply both numbers by the same factor to eliminate decimals
• What is the result of multiplying 0.04 by 0.2?

  0.008
• How do you divide 3.2 by 0.8?

  Multiply both by 10 to simplify
• What is the result of adding 16.24 and 3.2?

  19.44
• What are the common methods for calculating percentages?

  • Use building blocks for percentages without a calculator
  • For calculator use, apply direct multiplication
• How do you find 23% of 60 without a calculator?

  Use building blocks to calculate
• What is the benefit of using building blocks for percentage calculations?

  It simplifies calculations without a calculator
• What is the best method for adding decimals with different place values?

  Simple column addition
• What is the sum of $16.24$ and $3.2$?


  $19.44$
• How do you calculate percentages without a calculator?

  Use building blocks based on 100
• How do you find $23\%$ of $60$ without a calculator?


  Calculate $10\% =$$6$ and $1\% =$$0.6$
• What is the result of $0.23 \times 60$ using a calculator?


  It gives the answer directly
• How do you increase a value by a percentage using a calculator?

  Multiply by $1 +$$\text{decimal form of percentage}$