Representing and solving problems involving mixed operations on numbers within 1000

In the morning, Emily decided to create some designs with her cereal bits. In total, she received 9 designs and used 63 cereal bits. About how many cereal bits were in each design? Do you think she used an equal number of cereal bits in each design?

• 7

• 2

• 21

• 8

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

Leo has 279 comic books in his collection. He puts 34 comic books in each box. About how many boxes of comic books does Leo have?

• 6

• 11

• 9

• 5

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

Use the expression you picked to estimate the quotient.

242 ÷ 29 is about ___.

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

Estimate the sum of 25 and 75.

• 25 + 75 = 100

• 30 + 80 = 110

• 20 + 70 = 90

• 20 + 80 = 100

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

190 people fit in 3 buses.
How many buses would you need to carry 570 people?

• 570 buses
• 9 buses
• about 63 buses
• about 6 buses

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

Mrs. Jones bought 46 books. Mrs. McCall bought 15 books.  About how many books did they buy altogether? 

• 61
• 50
• 70
• 65

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

A theater has 9 sections. Each section has 35 seats. How many seats are there in the entire theatr?

• 44 seats

• 275 seats

• 315 seats

• 2,745 seats

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

A school has 617 students  Each class has between 28 and 32 students.  Which of the following is a reasonable estimate of the number of classes in the school? 
(HINT: Estimate the number of students using a compatible number between 28 and 32.)

• 14 classes
• 30 classes
• 20 classes
• 60 classes

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

The city of Chicago has 1,242 law enforcement officers in the police department.  If the officers are divided into groups of 18, about how many officers will be in each group?

• 30
• 130
• 60
• 700

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

Jim has 587 marbles. Andy has 215 more marbles than Jim.

What is the best estimate of the number of marbles Andy has?

• 790

• 800

• 400

• 700

Answer explanation

Yes, 587 rounded to the hundreds place is 600, and 215 rounded to the hundreds place is 200. 600 + 200 = 800

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3