Order of Operations BODMAS PEDMAS
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Order of Operations BODMAS PEDMAS — Free MYP2 Mathematics Practice Questions

1QuestionApplying Rules to Whole NumbersConcept Practice
2 marks~3 minCriterion A
The diagram shows a right angle divided into two parts. A right angle measures 90°90°.

One part measures 35°35°.
a
Identify the type of angle formed by the two parts together. [1]
b
Calculate the measure of the missing angle. [1]
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Solutions

2QuestionApplying Rules to Whole NumbersAssessment Practice
6 marks~9 minCriterion D
A class runs a bake sale. They sell 12 items at 5 dollars each. Costs are: ingredients at 4 dollars per batch for 3 batches, plus 9 dollars for packaging. The profit can be modelled by the expression (12×5)−(4×3+9)(12 \times 5) - (4 \times 3 + 9).
a
Calculate the profit. Show each step using BODMAS. [2]
b
Explain what happens to the calculated profit if you add before multiplying inside the cost bracket. Show the incorrect result and state why this matters for budgeting. [2]
c
Identify two ways the expression may not reflect the actual profit at a real bake sale. [2]
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Solutions

3QuestionApplying Rules with Fractions and DecimalsConcept Practice
2 marks~3 minCriterion B
A unit fraction has 1 as its numerator. Study the pattern below.

12+14=3413+16=1214+18=38\frac{1}{2} + \frac{1}{4} = \frac{3}{4} \qquad \frac{1}{3} + \frac{1}{6} = \frac{1}{2} \qquad \frac{1}{4} + \frac{1}{8} = \frac{3}{8}
a
Identify the relationship between the two denominators in each sum. [1]
b
Calculate 15+110\dfrac{1}{5} + \dfrac{1}{10}, showing your working. [1]

Solutions

4QuestionCommon Mistakes in BODMAS ProblemsAssessment Practice
6 marks~9 minCriterion C
A shop sells bags of chips for 3 dollars each and bottles of juice for 2 dollars each.
a
A student evaluates 3×5+2×103 \times 5 + 2 \times 10 and gets 55 dollars. Identify the order-of-operations error the student made and state the correct total. [2]
b
The shop runs a "buy 2, get 1 free" deal on chips. A student writes 3×9−3×33 \times 9 - 3 \times 3 to find the cost of 9 bags. Calculate this cost and explain why the expression correctly models the deal. [2]
c
Describe one situation in which the expression 3×9−3×33 \times 9 - 3 \times 3 would not correctly model the deal. [2]
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Solutions

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