Answers SY2025-26 - 1205010 MJ Grade 6 Mathematics Sem 1 CRExpressions with Unknowns

Expressions with Unknowns Answers

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Which statement could the expression represent?

Andrea has 13 eggs and bought 13 more.

Victoria has 13 flowers. This is greater than the number of flowers Elisa has.

Prakhar is 13 years older than his youngest sister.

Kai is 13 blocks from home. Jack is a greater distance away.

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Jillian was asked to translate the expression into words. She wrote “a number increased by nine.” Which best describes the accuracy of Jillian’s answer?

It is incorrect. The variable would come first in the expression “a number” (n) “increased by” (+) “nine” (9).

It is incorrect. The phrase “increased by” refers to the inequality symbol “greater than” (>), not addition.

It is correct. A number increased by nine () is the same as nine increased by a number ().

It is incorrect. A number increased by nine refers to a multiplication expression ().

Which are correct interpretations of the expression ? Check all that apply.

5 more than a number

the sum of a number and 5

the difference of a number and 5

5 less than a number

5 is greater than a number

the total of a number and 5

Mischa wrote, “Anderson has ten trading cards. He gives some to Desai. This describes a possible context for the expression .” Which explains the accuracy of what Mischa wrote?

It is inaccurate. Her words translate to .

It is inaccurate. Her words translate to .

It is inaccurate. Her words translate to .

It is accurate. Her words translate to .

Which expression can be used to model the statement “On Wednesday, Nathaniel earned $10 less than he earned on Tuesday”?

n + 10

10 minus n

n minus 10

10 less-than n

Which expression can be used to model the phrase “the sum of three and a number”?

3 + x

x minus 3

3 minus x

x times 3

Kelley writes the expression to model the phrase “Xander studied two more hours than Nandini.” Which best explains the accuracy of Kelley’s expression?

It is accurate. In the phrase “two more hours than Nandini,” “two” is “2,” “more” is “+,” and Nandini’s study time is unknown or “n,” so or are correct translations.

It is inaccurate. In the phrase “two more hours than Nandini,” “two” is “2,” “more” is “+,” and Nandini’s study time is unknown or “n,” so is the correct translation.

It is inaccurate. In the phrase “two more hours than Nandini,” “two” is “2,” “more than” is “>,” and Nandini’s study time is unknown or “n,” so is the correct translation.

It is inaccurate. In the phrase “two more hours than Nandini,” “two” is “2,” “more than” is “<,” and Nandini’s study time is unknown or “n,” so is the correct translation.

Which set of algebra tiles represents the sentence below?Carlton earned 3 more stamps.

1 box contains x and 3 boxes contain plus signs.

1 box contains x and 3 boxes contain minus signs.

3 boxes contain x and 1 box contains a plus sign.

3 boxes contain negative x and 1 box contains a plus sign.

Which steps can be taken to translate the phrase “the height of a tree is increased by seven inches” into an algebraic expression? Check all that apply.

Replace “the height of a tree” with a variable, x.

Replace “seven inches” with a variable, x.

Replace “increased by” with an addition symbol.

Replace “seven inches” with 7.

Replace “increased by” with a multiplication symbol.

Replace “the height of a tree” with 7.

Write the expression .