Multiplication and Division Problem Solving

There are 21 students who are divided into 3 teams for an outdoor game. Catie wrote the division sentence below to show how many students are on each team.
21÷□=3

Which number sentence can be used to find the number of students on each team?

• 21−3=□

• 3+□=21

• □÷3=21

• 3×□=21

Mr. Hastings wants to split his class of 30 students into 5 equal groups. Which of the following should he use to find the number of students in each group?

• Subtraction

• Addition

• Multiplication

• Division

If □÷3=6, what is another number sentence that gives the same answer for □ ?

• 2×8=□

• 2×9=□

• 3×7=□

• 3×8=□

Which story problem was Rebecca solving?

• Jessica has a tray with 42 cookies arranged in rows. There are 6 rows of cookies. How many cookies are in each row?

• Jessica has a tray with 64 cookies arranged in rows. There are 8 cookies in each row. How many rows of cookies are there?

• Jessica has a tray of cookies with 8 rows of cookies. There are 8 cookies in each row. How many cookies does Jessica have?

• Jessica has a tray of cookies with 6 rows of cookies. There are 8 cookies in each row. How many cookies does Jessica have?

Miguel is multiplying the numbers 2, 5, and 6. He uses the equation below:

2 × 5 × 6 = 60

Miguel thinks that he can change the order of the factors and still get the same product.

Choose ALL different equations using the numbers 2, 5, and 6 that show that Miguel can change the order of the factors and get the same product.

• 2 = 5 × 6 × 60

• 6 × 5 × 2 = 60

• 60 = 5 × 2 × 6

• 60 × 5 = 2 × 6

Choose all the problems that the picture can help to answer.

• 7×7=□

• 28÷4=□

• 28÷7=□

• 28÷□=4

• 7÷□=28

What number should go in the box to make the number sentence true?

9 × 10 = 90

90 × 10 = □

• 80

• 100

• 900

• 910

Which is the correct way to solve this number sentence? 4×2×5=?

• First multiply 4×5. Then multiply 2×5 and add together the products 20+10=30.

• First multiply 4×2. Then multiply 4×5 and add together the products, 8+20=28 .

• First, multiply 2×5.Then add 4 to the product, 10+4=14.

• First multiply 4×2. Then multiply 8×5 to get 40.

Pat's school is taking a field trip. There are 7 classes going on the field trip and each class has 9 girls. Pat wants to find the number of girls going on the field trip. One way to find the number of girls is to find 9×7=□. Which sentences show other ways Pat can find the number of girls? Choose ALL that are correct.

• (9×5)+(9×2)=□

• 9÷(4+3)=□

• 9×4×3=□

• (4×7)+(5×7)=□

• (9×7)+(9×7)=□

Pat's school is taking a field trip. There are 7 classes going on the field trip and each class has 9 girls. Pat wants to find the number of girls going on the field trip. One way to find the number of girls is to find 9×7= ⬜. Which sentence shows how to solve the problem using distributive property?

• (9 x 5) + (9 x 2)= ⬜

• 9 ÷ (4 + 3)= ⬜

• 9 x 4 x 3= ⬜

• (9 x 7) + (9 x 7)= ⬜