Answer and explaination:

1.)5 10 15

2.)2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46

3.)5 10 15 20 25 30 35 40 45 50 55

4.)10 20 30 40 50 60

5.)6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96

6.)7 14

7.)2 4 6 8 10 12 14 16 18 20 22

8.)5 10 15 20 25 30 35 40 45 50 55 60 65 70 75

9.)2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34

10.)3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57

Step-by-step explanation:

80 think of a number that can make 80 the same

10? ok let's try 10

10 20 30 40 50 60 70 80

your right it's 10 awesome right?