TEKS 7.3B Worksheets — Grade 7 Apply and extend previous understandings of operations

Zoe is saving money to buy a new bicycle. She has already saved $45 and plans to save an additional $5 each week. How much money will she have after 4 weeks of saving more money?

1. $65 ✓
2. $55
3. $70
4. $60

Why: To find out how much money Zoe will have after 4 weeks, first calculate how much she saves in those 4 weeks: 4 weeks * $5/week = $20. Then, add this amount to her current savings: $45 + $20 = $65. Therefore, Zoe will have $65 after 4 weeks.

Karim loves to visit the Enchanted Rock during his weekends. One Saturday, he brought a picnic basket containing 3/4 of a gallon of lemonade. If he shared 1/3 of the lemonade with his friends, how much lemonade did he have left after sharing? Express your answer in gallons.

1. 1/2 ✓
2. 1/4
3. 1/8
4. 2/3

Why: To find out how much lemonade Karim had left after sharing, first calculate the amount he shared. Karim shared 1/3 of 3/4 gallons of lemonade: (1/3) * (3/4) = 3/12 = 1/4 gallon. Next, subtract the amount he shared from the total he had: 3/4 - 1/4 = 2/4 = 1/2 gallon. Thus, Karim has 1/2 gallon of lemonade left.

Sofia is planning a school fundraiser by selling boxes of cookies. Each box costs $5, and she hopes to sell a total of 50 boxes. What does the total amount of money Sofia expects to raise represent in this situation?

1. The total money raised if all boxes are sold ✓
2. The number of boxes Sofia wants to sell
3. The cost of one box of cookies
4. The profit from each box sold

Why: Sofia expects to raise money by selling 50 boxes at $5 each. The total amount of money raised if all boxes are sold can be calculated as 50 * 5 = $250. Therefore, the correct answer represents the total money raised if all boxes are sold.

Lila's family is planning a trip to the San Antonio River Walk, where they will rent bicycles for sightseeing. If each bicycle rental costs $15 and they budget $120 for rentals, what is the maximum number of bicycles Lila's family can rent for the day?

1. 8 ✓
2. 6
3. 7
4. 5

Why: To find the maximum number of bicycles Lila's family can rent, divide the total budget by the cost per bicycle. This can be calculated as 120 ÷ 15 = 8. Therefore, Lila's family can rent a maximum of 8 bicycles.

Amara recorded the number of books she read each month for four months. The data is shown below: January: 5 books, February: 8 books, March: 7 books, April: 4 books. How many books did Amara read in total over these four months?

1. 24 ✓
2. 28
3. 26
4. 30

Why: To find the total number of books Amara read, we add the number of books read each month: 5 + 8 + 7 + 4 = 24. Therefore, the correct answer is 24.

Amir is organizing a family picnic in Marfa, Texas. He plans to make two types of sandwiches: turkey and veggie. He has 3/4 of a loaf of bread for turkey sandwiches, and each turkey sandwich requires 1/8 of a loaf of bread. For veggie sandwiches, he has 1/2 of a loaf of bread, and each veggie sandwich requires 1/4 of a loaf. If Amir wants to make as many sandwiches as possible, what is the total number of sandwiches he can make?

1. 12
2. 8 ✓
3. 10
4. 6

Why: To find the total number of sandwiches Amir can make, we first calculate how many turkey sandwiches he can make with 3/4 of a loaf. Since each turkey sandwich requires 1/8 of a loaf, we perform the division: (3/4) ÷ (1/8) = (3/4) * (8/1) = 3 * 2 = 6 turkey sandwiches. Next, for the veggie sandwiches, with 1/2 of a loaf and each sandwich requiring 1/4 of a loaf, we calculate: (1/2) ÷ (1/4) = (1/2) * (4/1) = 2 veggie sandwiches. Adding both types of sandwiches together gives 6 + 2 = 8 sandwiches in total.

Diego is planning a birthday party and wants to buy pizza for his friends. Each pizza costs 12 dollars. If Diego has 60 dollars to spend, how many pizzas can he buy without exceeding his budget?

1. 5 ✓
2. 4
3. 3
4. 6

Why: To find out how many pizzas Diego can buy, divide his total budget of 60 dollars by the cost of one pizza, which is 12 dollars. The calculation is 60 ÷ 12 = 5. Therefore, Diego can buy 5 pizzas without exceeding his budget.

Carlos is planting a garden with his friends. They plan to plant 3 rows of tomato plants, with 5 plants in each row. If they also want to plant 2 rows of pepper plants, with 4 plants in each row, how many plants will Carlos be planting in total?

1. 23 ✓
2. 20
3. 27
4. 15

Why: To find the total number of plants, first calculate the number of tomato plants: 3 rows * 5 plants/row = 15 tomato plants. Then, calculate the number of pepper plants: 2 rows * 4 plants/row = 8 pepper plants. Finally, add the two amounts together: 15 + 8 = 23. Therefore, Carlos will be planting 23 plants in total.