Doctor, Doctor
Factors
Multiples
100

What is:

11 − (4 × 9 − 10)

What is -15

100

What is 

6 and 8

1, 2, 3, 6

1,2,4,8

100

What is the multiples of 3 and 12

3, 6, 9, 12, 15, 18, 21, 24

12, 24, 36, 48, 60, 72

200

What is:

(2 − 10 × 6) − 7

-65

200

What is:

6 and 12

1, 2, 3, 6

1, 2, 3, 4, 6, 12 

200

What are the multiples of

5 and 8

5, 10, 15, 20, 25, 30, 35

8, 16, 24, 32, 40, 48, 56

300

What is:

(4 + 10) × 3 − 4

38

300

What is 12 and 24

1, 2, 3, 4, 6, 12

1, 2, 3, 4, 6, 8, 12, 24

300

What are the multiples of 2 and 7

2, 4, 6, 8, 10. 12, 14

7, 14, 21, 28,35, 42, 49

400

What is:

(12 − 11) + 12 × 7

85

400

What is 16 and 36

1, 2, 8, 16

1, 2, 3, 4, 6, 9, 12, 18, 36

400

What are the multiples of

3, 6, and 12

3, 6, 9, 12, 15, 18, 21

6, 12, 18, 24,

12, 24,

500

7 − 10 × 2 − 4 × (6 − 9)

-1

500

What are the factors of

15 and 20

1, 3, 5, 15

1, 2, 4, 5, 10, 20

500

What are the multiples of 

2, 4, 6

2, 4, 6, 8, 10, 12

4, 8, 12, 16, 20

6, 12, 18, 24