Multiplication
Division
Multiples & Factors
Estimating with Multiplication & Division
Word Problems
100
152 x 8
1,216
100
72 ÷ 4
18
100
Here is the beginning of a list of multiples of 2:
2, 4, 6, 8, 10, 12
Select all statements that are true about this list.
A. The terms in the list are all odd.
B. The 10th term in the list is 20.
C. There are no multiples of 5 in the given list.
D. The 100th term in the list is 100.
E. The next multiple of 4 in the list is 16.
B, E
100
Which is the best estimate for the value of 287 x 6?
A. 200
B. 2,000
C. 20,000
D. 200,000
B. 2,000
The exact answer is 1,722 so the closest estimate is 2,000.
100
Ryan bought 345 packages of erasers. There are 7 erasers in each package. How many erasers did Ryan buy?
2,415 erasers
200
25 x 67
1,675
200
144 ÷ 3
48
200
Here is the beginning of a list of multiples of 6:
6, 12, 18, 24, 30, 36
Select all statements that are true about this list.
A. The terms in the list are all even.
B. The 10th term in the list is 50.
C. There are no multiples of 3 in the given list.
D. The 100th term in the list is 600.
E. The next multiple of 5 in the list is 40.
A, D
200
Which is the best estimate for the value of 2,369 x 3?
A. 700
B. 7,000
C. 70,000
D. 700,000
B. 7,000
The exact answer is 7,107 so the closest estimate is 7,000.
200
Jack's friend bought a total of 1,484 erasers. There are 7 erasers in each package. How many packages of erasers did Jack's friend buy?
212 packages of erasers
300
1,726 x 4
6,904
300
536 ÷ 8
67
300
Here is the beginning of a list of multiples of 4:
4, 8, 12, 16, 20, 24
Select all statements that are true about this list.
A. The terms in the list switch between even and odd.
B. The 10th term in the list is 40.
C. There are no multiples of 7 in the given list.
D. The 100th term in the list is 400.
E. The next multiple of 5 in the list is 60.
B, C, D
300
Which is the best estimate for the value of 4,581 x 7?
A. 300
B. 3,000
C. 30,000
D. 300,000
C. 30,000
The exact answer is 32,067 so the closest estimate is 30,000.
300
Emma is getting grass seed for her lawn. The lawn will be 230 square feet. Each bag of grass seed covers 7 square feet. How many bags of grass seed does Emma need?
Emma will need 33 bags of grass seed.
230 ÷ 7 = 32 R 6
32 bags will not be enough because there is a remainder. 33 bags will be enough with a little grass seed left over.
400
83 x 39
3,237
400
3,738 ÷ 7
534
400
Here is the beginning of a list of multiples of 7:
7, 14, 21, 28, 35, 42
Select all statements that are true about this list.
A. The terms in the list switch between even and odd.
B. The 10th term in the list is 70.
C. There are no multiples of 3 in the given list.
D. The 100th term in the list is 7,000.
E. The next multiple of 5 in the list is 70.
A, B, E
400
Which is the best estimate for the value of 504 ÷ 6?
A. 8
B. 80
C. 800
D. 8,000
B. 80
The exact answer is 84 so the closest estimate is 80.
400
Tom's family is getting soil for a garden. The garden will be 140 square feet. Each bag of soil covers 6 square feet. How many bags of soil does Tom's family need? Show your reasoning.
Tom's family will need 24 bags of grass seed.
140 / 6 = 23 R 2
23 bags will not be enough because there is a remainder. 24 bags will be enough with a little grass seed left over.
500
4,392 x 9
39,528
500
7,576 ÷ 8
947
500
Here is the beginning of a list of multiples of 8:
8, 16, 24, 32, 40, 48
Select all statements that are true about this list.
A. The terms in the list are all even.
B. The 10th term in the list is 10.
C. There are no multiples of 7 in the given list.
D. The 100th term in the list is 800.
E. The next multiple of 5 in the list is 60.
A, C, D
500
Which is the best estimate for the value of 7,053 ÷ 3?
A. 20
B. 200
C. 2,000
D. 20,000
C. 2,000
The exact answer is 2,351 so the closest estimate is 2,000.
500
A room needed new floor tiles. Cara helped take measurements. Here is a drawing of the room.
A. What is the area of the room?
B. There are 5 boxes of tiles. Each box covers 6 square cm. Is that enough?
A: 36 square centimeters
B: No, that is not enough because it would cover 30 square cm and they need 36 square cm.