Representing Situations with Equations

Which two operators could represent a situation for the equation 4.5x = 124 ?

• multiplication and addition

• multiplication and division

• division and subtraction

• multiplication and subtraction

Which of the following is NOT a possible strategy to solve for x in the equation 6x = 18 ?

• 6 x _____ = 18

• 6 x 18

Which mathematical phrase describes the equation 3.2y = 18.3 ?

• the sum of 3.2 and a number is 18.3

• the difference between 18.3 and a number is 3.2

• 3.2 times a number is 18.3

• 3.2 plus a number is 18.3

Which mathematical phrase does NOT describe the equation 7.5x = 14.21 ?

• 7.5 times a number is 14.21

• some number times 7.5 is 14.21

• 14.21 divided by 7.5 is x

• 7.5 plus a number is 14.21

Which situation could be represented by the equation 1.5x = 225 ?

• Sami ran a total of 225 miles on Monday. He ran 1.5 miles in the morning and the rest of miles in the evening.

• Sami ran 1.5 miles and ran each mile in 225 minutes.

• Sami ran a total of 225 miles. He ran 1.5 miles each hour.

• Sami ran 225 miles one week and 1.5 miles the next week.

Which situation could be represented by the equation 3y = 21 ?

• A teacher divided 21 students into 3 groups with y amount of students in each group.

• A teacher divided her students into 3 groups with 21 students in each group with y representing the number of student groups.

• A teacher passed out 21 cards each to 3 students, with y representing the total number of cards that the teacher passed out.

Which situation could NOT be represented by the equation 16.5 = 4.6x ?

• Alexis needs to drive 16.5 miles and wants to split them between 4.6 days, with x representing the number of miles she will drive per day.

• Alexis drove a total of 16.5 miles over the course of 4.6 days in which x represents the number of miles she drove per day.

• Alexis drove 16.5 miles each day for 4.6 days in which x represents the number of days.