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Quiz Discussion

Title: Addition and Subtraction of complex numbers

Grade: 8-b Lesson: S2-L5

Explanation: Let us discuss a few questions on this topic and review the answers to every question.

Discussion: Step1 Step2 Step3 Step4 Step5

Quiz: Discussion in Class

Problem Id	Problem	Options
Steps 1	Add or subtract. Write the answer in standard form (6 + 3i) + (2 − 5i).	A) (8 - 2i) B) (18 - i) C) (4 - i) D) (4 - 2i)
Steps 2	Subtract the complex numbers (13 + 4i) − (8 + 5i).	A) (3 - i) B) (4 - i) C) (5 - i) D) (6 - i)
Steps 3	Find the sum of two complex numbers and then subtract their sum from another complex number: (- 23.4 + 7i) + (15.6 - 5i) - (19 + 11i) + (0.9i -13.3)	A) -40.1 - 8.1i B) 40.1 + 8.1i C) -40.1 + 8.1i D) 40.1 - 8.1i
Steps 4	Add three complex numbers (17 + 3i) + (9 + 4i) + ( 2.5i - 12).	A) 14i + 9.5 B) 14 - 9.5i C) 14i - 9.5 D) 14 + 9.5i
Steps 5	Subtract the complex numbers ( 6i - 20) - ( 12.3i + 15.2) - ( 2.9i +17).	A) 52.2 + 9.2i B) -52.2 - 9.2i C) -52.2 + 9.2i D) 52.2 - 9.2i

Problem Id

Problem

Options

Steps 1

Add or subtract. Write the answer in standard form (6 + 3i) + (2 − 5i).

A) (8 - 2i)

B) (18 - i)

C) (4 - i)

D) (4 - 2i)

Subtract the complex numbers (13 + 4i) − (8 + 5i).

A) (3 - i)