Gold
Silver
Bronze
Iron
100
14. Bea’s Bakery bakes 215 cookies and 45 muffins every hour. How many baked goods are baked in 4 hours?
1,040 baked goods
100
15. Write and solve an equation that represents the given bar diagram.
4 x 48 = b
b = 192
100
18.What is the product of
?
A. 9515
B. 9505
C. 9155
D. 965
A
100
19. How can you use mental math to find the product of
?
6 x 300 = 1800
5x6 = 30
1800-30= 1770
200
7. Draw a model to find 365 x3.
Check models; 1,095
200
12.Which of the following is equivalent to
?
(See P. 121)
C
200
3. Mr. Ortiz sells tortillas in bags of 25 and in bags of 50. If he sells 4 bags of 50 and 6 bags of 25, how many tortillas did Mr. Ortiz sell?
𝖠. 10 tortillas
𝖡. 170 tortillas
𝖢. 350 tortillas
𝖣. 3,500 tortillas
C
200
13. Find
. Do not have to draw a bar diagram to solve.
Check diagram. x = 936
300
2. Alberto rode the train 198 miles roundtrip 4 times last month. Explain how to use mental math to find the total distance Alberto traveled.
Round 198 to 200 (add 2)
200 x 4 = 800 (need to subtract)
2x4 =8 800-8 = 792
300
1. Use numbers from the box (P. 119) to show how to multiply 126 by 3.
18
60
300
378
300
8. Select all of the expressions that have a product of 640.
(See p. 120)
A, D
300
16. Which of the following is equivalent to
? Select all that apply. (See P. 121)
A, C, E
400
4.
A.What are the partial products whenfinding
? Select all that apply.
A. 5400
B. 3000
C. 2400
D. 2000
E. 210
F. 12
B. Find the product of 1,874and 3.
Part A: B, C, E, F
Part B: 5622
400
5. A science class is growing some fruit and vegetable plants on a plot of land behind their school. Each section is laid out in rows. (See p. 119)
Part A: There are 9 strawberry plants planted in each row. Write and solve an equation to find how many strawberry plants were planted.
Part B: There are 9 pepper plants planted in each row. Draw an area model and show the partial products to find how many pepper plants are planted behind the school.
Part A: 9 x 65 = s
s = 585 strawberry plants
Part B: Check student drawings; 162
400
10. Tickets for a resort cost $1,182 each for adults and $459 each for children. Find the cost for 3 adult tickets and 3 child tickets. Explain how you know your answer is reasonable.
$4,923
Estimate: $1000 x 3 = $3,000 and $500 x 3 = $1,500. $3000 + $1500 = $4500, which is close to $4923.
400
17. Mr. Luca would like to purchase a digital keyboard for each of his 3 nieces and 1 nephew. The keyboard costs $105.
A. Mr. Luca thinks the total cost should be about $200. Is this amount reasonable? Explain.
B. Write and solve an equation to find the total cost of the keyboards. Explain why your answer is reasonable.
A: No, 4x105 is about 4x100 = 400, and since 100 is an underestimate, the actual will be more than $400. $200 is way too low.
B. 4x105 = $420
It is reasonable b/c it is close to my estimate of $400.
500
9. The table (P. 120) shows the number of hot drinks sold in a busy coffee shop in 1 week.
A. If the same number of cups of coffee were sold for 6 weeks in a row, how many cups would be sold in all?
B. The special drink of the month was an iced mocha. The shop sold 5 times as many iced mochas in one week as hot mochas. How many more iced mochas were sold than hot mochas in 4 weeks? Explain.
A. 5,010 cups of coffee
B. 3,200 more iced mochas; 200x5 = 1,000; 1,000-200 = 800; 800x4 = 3,200
500
6. Select all the expressions that could be used to find 1,235 x 9.
(See P. 120)
B, C, D
500
11.Which expression has the same value as
?
(See P. 121)
D
500
20.
Part A. Select all the partial products for
A. 8
B. 80
C. 160
D. 1600
E. 2400
Part B: Find the product for Part A using the partial products.
Part A: A, C, E
Part B: 2,568