1. Can you see the pattern in the following series of multiplications? Fill in the rest of the chart with the correct numbers.
37 × 3 = 111
37 × 6 = ?
37 × 9 = ?
37 × ? = ?
37 × ? = 555
37 × ? = ?
37 × ? = ?
37 × ? = ?
37 × ? = ?

2. Name the factors in each of the following problems.
a. 6 × 12 = 72
b. 8 × 9 = 72
c. 4 × 4 = 16
d. 3 × 7 = 21

3. Name the multiples in each of the following problems.
a. 5 × 7 = 35
b. 17 × 2 = 34
c. 16 × 4 = 64
d. 11 × 7 = 77

4. Use division to determine whether the following numbers are factors.
Answer yes or no.
a. Is 13 a factor of 39?
b. Is 15 a factor of 342?
c. Is 14 a factor of 201?
d. Is 12 a factor of 228?

5. Indicate whether each of the following numbers is divisible by 3.
Answer yes or no.
a. 27
b. 35
c. 123
d. 402

6. Indicate whether each of the following numbers is divisible by 4.
Answer yes or no.
a. 124
b. 289
c. 304
d. 222

7. Find the prime factors of each of the following numbers.
a. 25
b. 38
c. 36
d. 285
e. 650
f. 1,740