Multiplication
7 x ____ = 56
Find the missing number.
8
What two equations best represents the situation?
Khori picked 20 flowers. That is 4 times as many as his little brother, Andrew picked:
How many flowers did Andrew pick? (f stands for Andrew's flowers)
A. 20 x 4 = f
B. 20 = 4 x f
C. f x 4 = 20
D. 20 + 4 = f
B and C
List all the factors of 11
1, 11
List two multiples of 11.
22,33
Write a prime number on your whiteboard and explain how you know it is prime.
Student explanation
5 x 8 = ?
40
Stella is 12 years old. Stella's grandmother is 5 times older than Stella. How old is Stella's grandmother?
60 years old.
List all the factors of 24
1,2,3,4,6,8,12,24
List two multiples of 24.
48, 72
Write a composite number on your whiteboard and explain how you know it is composite.
Student explanation
7 x ____ = 49
Find the missing value and use a number line to solve.
7
The pink table has 6 notebooks. The class has 8 times as many notebooks as the pink table. How many notebooks does the class have?
48 notebooks.
List all the factors of 10
1,2,5,10
List two multiples of 5
10,15
Separate these numbers into two groups either prime or composite.
32, 13, 7, 10, 11, 15
Prime: 7,11,13
Composite: 10, 15, 32
___ x 9 = 36
Find the missing value. Use any strategy you feel is best
4
Claire bought a dress and a sweater. The dress cost 2 times as much as the sweater. The sweater cost $19. How much did the dress cost?
The dress cost $38
List all the factors of 36
1,2,3,4,6,9,12,18,36
List two multiples of 16
32, 48
Prime or Composite?
11
Prime
The equation 9 x 7 = 63 mean:
A. 9 folders and 7 folders together are 63 folders.
B. 9 erasers divided into 7 groups is 63 erasers.
C. 63 crayons are 9 times as many as 7 crayons.
D. The difference between 9 binders and 7 markers is 63.
Sylas bought a video game and a DVD. The video game cost $36. The DVD cost $9. How many times more than the DVD did the video game cost?
List the factors of 25
1,5,25
List two multiples of 10
Prime or Composite?
24
Composite