Word Problems and Algebraic Expressions

This video tutorial covers several math problems for seventh-grade students. It begins with estimating the weight of apples using multiplication. Next, it involves selecting stories that match a tape diagram, followed by calculating weekly earnings for a savings goal using a tape diagram. The tutorial then compares expressions to determine the greatest value and concludes with solving various equations involving different operations.

If two apples weigh 511 grams, what is the estimated weight of six apples?

• 1022 grams

• 1533 grams

• 2044 grams

• 2555 grams

Which story can be represented by a tape diagram involving 87 items and 39 items?

• 87 children and 39 adults at a show

• 87 first graders with 39 picked up

• 87 pencils with 39 given to a teacher

• 87 spent on tickets and a 39 dinner

Which story does not fit the tape diagram model?

• 87 children and 39 adults at a show

• 87 first graders with 39 picked up

• 87 pencils with 39 given to a teacher

• 87 spent on tickets and a 39 dinner

How much does Andre earn each week if he saves $40 in five weeks after donating $2 weekly?

• $8

• $10

• $12

• $14

Which of the following is a correct representation of Andre's weekly earnings?

• x = 12

• x = 10

• x = 14

• x = 8

Which expression has the greatest value?

• A negative divided by a negative

• 7 and 5/6 minus 9 and 3/4

• A negative times a positive

• A negative plus a negative

What is the result of 8.5 times negative 3?

• 25.5

• -8.5

• 8.5

• -25.5

Solve for b: -7 + b = -11.

• 18

• -18

• 4

• -4

What does c equal if c minus a negative 3 equals 15?

• 9

• 15

• 18

• 12

If d times -4 equals 32, what is the value of d?

• -32

• 8

• -8

• 32