1.1.3 Applying the order of operations (BIDMAS/BODMAS)

• Steps to solve the expression 2 + 3 × (6 - 4) ÷ 2^2 using BIDMAS/BODMAS

  1️⃣ Solve operations within brackets: 6 - 4 = 2

  2️⃣ Evaluate indices: 2^2 = 4

  3️⃣ Perform multiplication: 3 × 2 = 6

  4️⃣ Perform division: 6 ÷ 4 = 1.5

  5️⃣ Perform addition: 2 + 1.5 = 3.5
• Steps to simplify the expression 2 × (3 + 4) - 5

  1️⃣ Solve the brackets: 3 + 4 = 7 | 2 × 7 - 5

  2️⃣ Multiplication: 2 × 7 = 14 | 14 - 5

  3️⃣ Subtraction: 14 - 5 = 9 | 9
• Division should be performed before multiplication in BIDMAS/BODMAS.

  True
• After multiplication, the expression becomes 2 + 12 ÷ 4.

  True
• What is the expression given to evaluate step-by-step?

  2 + 3 × (5 - 1) ÷ 4
• What do BIDMAS and BODMAS help us remember?

  Order of operations
• The simplified expression 2 × (3 + 4) - 5 equals 9

  True
• Match the operation with its example:

  Addition ↔️ 3 + 5

  Subtraction ↔️ 8 - 2

  Multiplication ↔️ 4 × 6

  Division ↔️ 10 ÷ 2
• Indices should be evaluated after brackets in BIDMAS/BODMAS.

  True
• What is the symbol for addition?

  +
• The symbol for exponents is ^

  True
• Match the operation with its position in BIDMAS:

  Brackets ↔️ First

  Indices ↔️ Second

  Division ↔️ Third

  Multiplication ↔️ Fourth
• What rule is used to guide the order of operations in mathematics?

  BIDMAS/BODMAS
• In BIDMAS/BODMAS, multiplication comes before division.

  False
• Order the operations in BIDMAS:

  1️⃣ Brackets

  2️⃣ Indices

  3️⃣ Division

  4️⃣ Multiplication

  5️⃣ Addition

  6️⃣ Subtraction
• Steps of BIDMAS/BODMAS rule

  1️⃣ Brackets

  2️⃣ Indices

  3️⃣ Division and Multiplication

  4️⃣ Addition and Subtraction
• What is the result after performing division in the expression?

  2 + 3
• What operation should be performed first in BIDMAS/BODMAS?

  Brackets
• What mnemonic is used to remember the order of operations?

  BIDMAS