Algebraic Expressions and Models Quiz

What does the entire bar represent in a bar model for the expression 5 + x?

• The number 5

• The unknown x

• The sum of 5 and x

• The difference between 5 and x

In a bar model for y - 3, what does the remaining part of the bar represent?

• The number 3

• The sum y + 3

• The difference y - 3

• The unknown y

How is multiplication represented in a bar model for 6n?

• A bar representing n divided by 6

• Six sections each representing n

• A bar divided into 4 equal parts

• A single bar of length 6

What does dividing n by 4 in a bar model represent?

• A bar representing 4 times n

• Four sections each representing n

• A single section representing n

• Four equal parts each representing n/4

Which clue word indicates subtraction in algebraic expressions?

• Containers holding objects

• Objects shared

• Money spent

• Money earned

When are two algebraic expressions considered equivalent?

• When they have the same constants

• When they are equal for all values of the variable

• When they have the same coefficients

• When they have the same variables

If Emma and Declan start with the same amount of money and spend different amounts, how do we determine if they have the same amount left?

• By comparing the total money spent

• By comparing the remaining amounts using bar models

• By comparing the amounts spent

• By comparing the initial amounts

In the example of Emma and Declan, what does x - 7 represent?

• The total money they started with

• The money Emma has left

• The money Declan has left

• The total money spent by both

How do we express Gus's score compared to Bill's in the video game example?

• Bill's score plus 2

• Bill's score plus 5

• Bill's score plus 6

• Bill's score plus 7

Why are Tala's and Gus's scores not equivalent?

• Tala scored more than Gus

• Their scores are not compared to Bill's

• Gus scored more than Tala

• They both scored the same