1. Rebecca has 3 boxes of shells with 30 shells in each box. Which equation can be used to find the number of shells in Rebecca's boxes?
A. 3 x 3 x 0 =
B. 3 + 3 x 10 =
C. 3 x 3 + 10 =
D. 3 x 3 x 10 =
What is...
D. 3 x 3 x 10 =
5. 8 x 40 =
What is..
320
2. Which of these is one way to find 7 x 80?
A. 7 x (10 + 8)
B. (7 x 8) x 10
C. 7 + (8 x 10)
D. (7 x 8) + 0
What is...
B. (7 x 8) x 10
3. How many tens are in the product 50 x 9?
A. 14 tens
B. 45 tens
C. 140 tens
D. 450 tens
What is...
B. 45 tens
12. Bryan places his markers into 3 groups. He has 10 markers in each group. How many markers does Bryan have?
What is...
30 markers
6. 60 x 5 =
What is...
300
4. Which of these is a way to multiply 6 x 70?
A. 6 x (10 + 10 + 10 + 10 + 10 + 10)
B. 7 x (10 + 10 + 10 + 10 + 10 + 10)
C. 6 x (10 x 10 x 10 x 10 x 10 x 10)
D. 7 x (10 x 10 x 10 x 10 x 10 x 10)
What is...
B. 7 x (10 + 10 + 10 + 10 + 10 + 10)
11. Can the following be used to multiply 40 x 6?
6 x 40
What is...
Yes
13. Maria has 9 packages of pretzels. There are 20 pretzels in each package. How many pretzels does Maria have?
What is...
180 pretzels
7. 70 x 5 =
What is...
350
8. Complete the equation.
(5 x 3) x 10 = 5 x (____ x ____)
What is...
(5 x 3) x 10 = 5 x (3 x 10)
11. Can the following be used to multiply 40 x 6?
(4 x 6) x 10
What is...
Yes
14. Lance has 4 boxes of comic books. Each box has 10 comic books in it.
Part A
Which equations could Lance use to find the total number of comic books, c?
A. 4 + 10 = c
B. 4 x 10 = c
C. (2 + 2) x 10 = c
D. (2 x 10) + (2 x 10) = c
E. (2 x 10) x (2 x 10) = c
What is...
B. 4 x 10 = c
C. (2 + 2) x 10 = c
D. (2 x 10) + (2 x 10) = c
9. Complete the equation.
8 x ____ = 8 x 9 x 10
What is...
90
8 x 90 = 8 x 9 x 10
11. Can the following be used to multiply 40 x 6?
(20 x 6) + (20 x 6)
What is...
Yes
14. Lance has 4 boxes of comic books. Each box has 10 comic books in it.
Part B
How many comic books does Lance have?
What is...
40 comic books
10. Complete the equation.
7 x 10 = (7 x ___) + (7 x ___)
What is...
Possible answer
7 x 10 = (7 x 5) + (7 x 5)
11. Can the following be used to multiply 40 x 6?
(40 x 10) + (60 x 10)
What is...
No