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LESSON 3. ORDER OF OPERATION
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Exercise 3.1
Multiple Choice: Shade the circle of your corresponding answer.
a. Which operation should be completed FIRST to find the value of the expression: 16 − 6 + 4 ?
O 6 + 4 O 16 – 6 O It does not matter O Not listed in the choice
b. Which operation should be completed FIRST to find the value of the expression: 20 ÷ 5 ∙ 2 ?
O 20 ÷ 5 O 5 - 2 O It does not matter O Not listed in the choice
c. Which operation should be completed FIRST to find the value of the expression: 8 ∙ 9 − 2 ?
O 9 - 2 O 8 ∙ 9 O It does not matter O Not listed in the choice
d. Which operation should be completed FIRST to find the value of the expression: 6 + 9 + 3 ?
O 9 + 3 O 6 + 9 O It does not matter O Not listed in the choice
e. Which operation should be completed FIRST to find the value of the expression: 2 + 8 ÷ 2 ?
O 8 ÷ 2 O 2 + 8 O It does not matter O Not listed in the choice
f. Which operation should be completed FIRST to find the value of the expression:
24 − 3 ∙ 4 ÷ 2 + 6 ?
O Multiply OR divide, in order, from LEFT to RIGHT
O Add OR subtract, in order, from RIGHT to LEFT
O Multiply OR divide, in order, from RIGHT to LEFT
O Add OR subtract, in order, from LEFT to RIGHT
g. Which choice is equivalent to the given expression: 24 − 3 ∙ 4 ÷ 2 + 6 ?
O 24 – 12 O 24 - 6 + 6 O 24 - 12 + 8 O Not listed in the choice
h. Which choice best described the mistake?
12 − (2 ∙ 4 + 1)
12 − (2 ∙ 5)
12 − 10
2
O It should NOT have started in the grouping symbols.
O It should NOT have multiplied 2 and 4.
O It should NOT have added 4 and 1.
O There is NO mistake. The work is CORRECT.
i. Use the correct order of operations to simplify the expression: 12 − (2 ∙ 4 + 1)
O 5 O 41 O 50 O Not listed in the choice
j. Which choice is equivalent to the given expression: [10 − (5 + 3)] ∙ 7 ?
O [10 - 8] · 7 O [5 + 3] · 7 O 5 + 21 O Not listed in the choice
Page |3.6 BUSINESS MATHEMATICS: MODULE 1
