Multiplying & Dividing Numbers
What's the Equation or Expression?
Multiplication & Division Word Problems
Interpreting Remainders
100

What is 17 x 5?


17 x 5 = 85 

10 x 5 = 50

7 x 5 = 35

50 + 35 = 85

100

If we have the equation 8 x 36 = n, what is another way to write that equation?

A.  n = 8 + 36

B. n = 8 x 42

C. n = 36 + 36 + 36 + 36 + 36 + 36 + 36 + 36 

D. n = 42 + 50 + 36 + 16

Another way to write the equation 8 x 36 = n is:

C. n = 36 + 36 + 36 + 36 + 36 + 36 + 36 + 36

100

Student Council is making Thanksgiving Day cards with for a local nursing home.  They are making them in batches of 70 and 80.  If they make 6 batches of 70 cards, how many cards to they make?


Student Council would make 420 cards.

6 x 70 = 420 

100

There are 9 friends in a Lego Creations Club.  They shared 150 Legos equally for their creations.  How many Legos were left over?

There are 6 Legos left over.

150 ÷ 9 = 16 R6

16 x 9 = (10 x 9) + (6 x 9)

16 x 9 = 144

144 + 6 (the remainder) = 150 

200

What is 52 ÷ 4 ?


What is 52 ÷ 4 = 13

4 x 10 = 40

4 x 3 = 12

40 + 12 = 52 

200

What equation represents the larger array made by these two smaller arrays?

A. 36 x 6 = 216

B. 30 x 8 = 240

C. 36 x 5 = 180

D. 30 x 10 = 300

The equation for the larger array made by these two smaller arrays is:

C. 36 x 5 = 180

200

Let's say that there are 92 fourth graders.  If there are 4 fourth grade teachers, how many students would be in each class?

There would be 23 fourth graders in each of the 4 classrooms.  

92 ÷ 4 = 23

23 x 4 = 92

20 x 4 = 80

3 x 4 = 12        80 + 12 = 92 

200

There are 103 fourth graders signed up to go to the state museum.  Parents with minivans are providing the transportation.  If each minivan holds 7 students, how many minivans will they need to go to the museum?

They would need 15 minivans to take the trip to the state museum.

103 ÷ 7 = 14 R5

We wouldn't tell the 5 remaining students that they couldn't go on the trip, so another van would be needed to take all of the fourth graders.

300

What is 3 x 35?

3 x 35 = 105

3 x 30 = 90

3 x 5 = 15

90 + 15 = 105

300

Choose the TWO equations that can be used to find    6 x 81

A.  6 x 81 = 6 x (80 + 1)

B.  6 x 81 = 6 + (80 + 1)

C.  6 x 81 = (6 x 80) + 1

D.  6 x 81 = (6 x 80) + (6 x 1)

The TWO equations that can be used to find  6 x 81 are:

A.  6 x 81 = 6 x (80 + 1)

and

D.  6 x 81 = (6 x 80) + (6 x 1)

300

Thomas is training for a marathon.  He runs/jogs 97 miles each month.  How many miles does Thomas run/jog in 6 months?

Thomas would run/jog 582 miles in 6 months.

97 x 6 = 582

90 x 6 = 540

7 x 6 = 42

540 + 42 = 582

300

Sam is making a SEVERAL batches of bright blue slime.  He needs 4 cups of glue for the recipe that he is using.  How many batches can he make if he has a total of 35 cups of glue? 

Sam can make 8 batches of bright blue slime.

35 ÷ 4 = 8 R3

With this problem, we need to ignore the remainder, because he doesn't have enough glue to make another batch of slime.

400

What is 15 x 12 ?

15 x 12 = 180

10 x 12 = 120

5 x 12 = 60

120 + 60 = 180

400

There are 37 fourth graders entering a poetry writing contest.  Each student writes 4 poems.  Which expression shows how to find the total number of poems that were written?

A.  (4 x 30) + 7

B.  (4 x 30) + (4 x 7) 

C.  4 + (4 x 30)

D. 4 x 30 x 7

The expression that shows how to find the total number of poems that were written by the 37 fourth graders is:

B.  (4 x 30) + (4 x 7)

400

Three friends are sharing 51 new Emoji pencils.  How many pencils will each person get?

Each of the three friends will get 17 Emoji pencils.

51 ÷ 3 = 17

17 x 3 = 51

10 x 3 = 30

7 x 3 = 21          30 + 21 = 51 

400

Sarah is packaging 29 muffins into boxes for a bake sale.  Each box holds 6 muffins.  How many boxes does Sarah need to hold ALL of the muffins?  

Sarah would need 5 boxes to hold ALL of the muffins.

29 ÷ 6 = 4 R5

Based on this question, she would need that extra box for the remaining 5 muffins.  She wants ALL of the muffins in boxes.