
Grade 9 Matrix Addition & Subtraction Word Problems
Authored by Anthony Clark
English, Mathematics
9th Grade
CCSS covered

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A school is organizing a field trip and has 3 buses. The first bus can hold 25 students, the second bus can hold 30 students, and the third bus can hold 20 students. Represent the number of students each bus can hold as a matrix. If 10 students are added to the first bus and 5 are removed from the second bus, what is the new matrix representing the number of students in each bus?
[[30], [25], [20]]
[[25], [25], [20]]
[[35], [30], [15]]
[[35], [25], [20]]
Tags
CCSS.HSN.VM.C.6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A bakery produces two types of cakes: chocolate and vanilla. The production for chocolate cakes is represented by the matrix [[50], [60], [70]] and for vanilla cakes by [[30], [40], [50]]. If the bakery increases the production of chocolate cakes by 10 and decreases the production of vanilla cakes by 5, what is the resulting matrix for the production?
[[70, 35], [80, 45], [90, 55]]
[[60, 25], [70, 35], [80, 45]]
[[55, 30], [65, 40], [75, 50]]
[[50, 20], [60, 30], [70, 40]]
Tags
CCSS.HSN.VM.C.6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A company has two departments: Sales and Marketing. The Sales department has 15 employees and the Marketing department has 10 employees. Represent this as a matrix. If 5 employees are transferred from Sales to Marketing, what is the new matrix representing the number of employees in each department?
[[15], [10]]
[[10], [20]]
[[10], [15]]
[[5], [20]]
Tags
CCSS.HSN.VM.C.6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a video game, a player earns points in two levels: Level 1 and Level 2. The points earned are represented by the matrix [[200, 150], [300, 250]]. If the player loses 50 points in Level 1 and gains 100 points in Level 2, what is the new points matrix?
[[200, 150], [250, 300]]
[[150, 150], [300, 300]]
[[250, 250], [300, 200]]
[[150, 250], [300, 250]]
Tags
CCSS.HSN.VM.C.8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A gym has two types of memberships: Basic and Premium. The number of members for each type is represented by the matrix [[120], [80]]. If 20 new Basic members join and 10 Premium members leave, what is the updated membership matrix?
[[130], [80]]
[[120], [90]]
[[150], [60]]
[[140], [70]]
Tags
CCSS.HSN.VM.C.6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A farmer has two fields: Field A and Field B. The yield from Field A is represented by the matrix [[100], [150]] and from Field B by [[80], [120]]. If the yield from Field A increases by 20 and from Field B decreases by 10, what is the new yield matrix?
[[130], [160]]
[[90], [130]]
[[100], [150]]
[[120], [170]], [[70], [110]]
Tags
CCSS.HSN.VM.C.6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A library has two sections: Fiction and Non-Fiction. The number of books in each section is represented by the matrix [[300], [200]]. If 50 Fiction books are added and 30 Non-Fiction books are removed, what is the updated matrix of books?
[[300], [170]]
[[350], [200]]
[[300], [200]]
[[350], [170]]
Tags
CCSS.HSN.VM.C.6
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