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Operations with Whole Numbers — Free MYP2 Mathematics Practice Questions
1QuestionAddition and Subtraction of Whole NumbersConcept Practice
2 marks~3 minCriterion A
A rectangle has side lengths of cm and cm.
a
State the number of sides a rectangle has. [1]
b
Calculate the perimeter of the rectangle. [1]
Solutions
2QuestionProperties of OperationsAssessment Practice
2 marks~3 minCriterion C
The commutative property of addition states that changing the order of addends does not change the sum: .
A student buys 3 pencils at 2 dollars each and 5 erasers at 1 dollar each.
A student buys 3 pencils at 2 dollars each and 5 erasers at 1 dollar each.
a
Calculate the total cost in both orders to show the commutative property holds. [1]
b
Explain one limitation of using this property to check totals in real life. [1]
Solutions
3QuestionProperties of OperationsConcept Practice
3 marks~5 minCriterion B
The bar chart shows the results of four calculations: , , , and .
a
Identify which operation gives the same result when the order of the numbers is swapped. [1]
b
Explain why that operation is described as commutative (meaning the order of the numbers does not change the result). [1]
c
Compare the results of and , and explain what this tells you about whether subtraction is commutative. [1]
Solutions
4QuestionAddition and Subtraction of Whole NumbersAssessment Practice
6 marks~9 minCriterion D
A student has a budget of 245 dollars for school supplies. She spends 89 dollars on books and 37 dollars on stationery. To estimate her remaining money, she rounds each amount to the nearest ten: dollars.
a
Calculate the actual amount of money remaining after both purchases. [2]
b
Calculate the difference between the student's estimate and the actual remaining amount. [1]
c
The student says: "Rounding is always good enough for managing a budget." Identify one situation where rounding could cause a problem in financial planning, and explain why. [3]
Solutions
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