IB MYP 2 Math Task Sheet: Order of Operations || Criterion C – Communicating

MYP 2 Mathematics – Task Sheet

Topic: Order of Operations

Level: MYP Year 2 (Grade 7)

Assessment Focus: Criterion C – Communicating

Global Context

Scientific and Technical Innovation: How can we ensure accurate results in scientific and real-life calculations?

Learning Objectives

• Use and explain the correct order of operations (BIDMAS/PEMDAS).
• Communicate mathematical steps clearly and logically using appropriate notation.

Part A: Solve and Show Your Work

Solve each expression using the correct order of operations. Show ALL steps clearly.

1. \( 8 + 6 \div 2 \times (3 + 1) \)
2. \( (5 + 3)^2 - 4 \times 2 \)
3. \( 18 \div 3 + 2 \times (4 + 5) \)
4. \( [2 + 3 \times (6 - 4)]^2 \div 5 \)
5. \( 7 + \{8 - [3 + 2 \times (1 + 1)]\} \times 2 \)

Part B: Explain Your Reasoning

Choose one problem from Part A and explain your reasoning in full sentences. Example:

“First, I solved the brackets because they come first in the order of operations. Then I did the multiplication before the addition…”

Criterion C – Rubric (Communicating)

Level	Descriptor
0	The student does not reach a standard described by any of the descriptors below.
1–2	The student attempts to organize work using a limited logical structure. Attempts to use some appropriate mathematical language or representation.
3–4	The student organizes work using a logical structure. Uses appropriate mathematical language and representation.
5–6	The student organizes work using a coherent structure and appropriate mathematical language. Uses a variety of representations effectively.
7–8	The student organizes work using a complete, coherent structure. Uses accurate and appropriate mathematical language. Uses varied, appropriate representations and includes clear explanations.

Challenge (Optional)

Write your own multi-step expression that uses brackets, exponents, multiplication/division, and addition/subtraction. Solve it and explain why the order matters.