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Topics 7 & 8 Review For CFA Unit 4

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**The dentist ordered 10 boxes of toothbrushes**

The dentist ordered 10 boxes of toothbrushes. There are 15 toothbrushes in each box. How many toothbrushes did the dentist order? 150 toothbrushes

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**Mark walks 30 minutes every day**

Mark walks 30 minutes every day. How many minutes does he walk in a month that has 31 days? 930 minutes

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**Every day, 60 people eat at Franco’s Diner.**

How many people eat there in 30 days? 1,800 people

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**Each of the 90 fourth-grade**

students at William Street School read 30 books over the school year. How many books did they read all together? 2,700 books

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**One centimeter is equal to**

10 millimeters. If a photo is 10 centimeters long, how many millimeters long is the photo? 100 millimeters

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**Meg saves $38 each week from**

the money she earns working part time. What is the best estimate of how much Meg will save in 52 weeks? 52 X $40 = $2,080

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**It took Anne 18 hours to drive**

from her home to Miami. She drove about 62 miles each hour. Which shows the best way to estimate the distance from Anne’s home to Miami? 60 X 18 = 1,080 miles

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**Carl volunteers about 32 hours**

each month at the local hospital. What is the best estimate of how many hours he volunteers in 12 months? 30 X 12 = 360 hours

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**Andy is stacking 49 boxes of**

paper on the shelves of an office supply store. Each box weighs about 28 pounds. What is the best estimate of the total weight of the boxes? 49 * 30 = pounds

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**A park ranger takes 24 groups of**

people hiking each week. There are 32 people in each group. What is the best estimate of how many people hike with the park ranger each week? 24 * 30 = 720 people

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**Fourteen students in Ms. Engel’s**

class have 2 pets. Three students have 1 pet. There are 3 students that do not have any pets. How many pets does the class have all together? 14 * 2 = 28 3 * 1 = 3 28 + 3 31 pets

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**Destiny is setting up chairs for a**

concert. One section will have 5 equal rows of 5 chairs each. The other section will have 8 equal rows of 2 chairs each. How many chairs will there be in all? 5 * 5 = 25 8 * 2 = 16 25 + 16 4 1 chairs

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Each of the 27 students in Mrs. Madison’s class brought in 18 aluminum cans during the class recycling drive. How many aluminum cans did Mrs. Madison’s class collect in all? 486 cans

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**There are 27 students in Mrs.**

Brunner’s class. Each student does 15 math homework problems each night. How many math problems in all does the class do in one night? 405 math problems

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**MacKenzie multiplies 13 × 45**

MacKenzie multiplies 13 × 45. Which of the following is NOT a partial product? A 15 B 50 C 90 D 400

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**One table in the school cafeteria**

can seat 12 students. How many students can be seated at 18 tables? 216 students

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**Genna drinks 74 ounces of water**

a day. How much water does she drink over 40 days? 2,960 ounces of water

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**17 students each brought in 20**

cookies for the school bake sale. How many cookies were there at the bake sale? 340 cookies

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**Mrs. Witt can type 58 words a**

minute. How many words can she type in one hour? 58 * 60 = 3,480 words

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**Jacob reads 68 pages each night.**

How many pages does Jacob read in a month with 31 days? 68 X 31 = 2,108 pages

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Find the product. 76 × 18 1,368

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**Which partial products can be used**

to find the product shown below? 51 × 42 A 2 and 2,000 B 10 and 2,400 C 12 and 2,040 D 102 and 2,040

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