Froggy Jumps multiplication by 20 from 0 to 10Online version Multiplication by 20 from a zero to 10. This set helps build number sense and helps youngsters see the pattern. by Algebra Help Desk 1 0 x 20 a 0 b 20 c 10 2 1 x 20 a 21 b 20 c 18 3 2 x 20 = a 22 b 42 c 40 4 3 x 20 = a 60 b 32 c 28 5 4 x 20 = a 24 b 80 c 16 6 5 x 20 = a 100 b 15 c 25 7 6 x 20 = a 120 b 26 c 14 8 7 x 20 a 140 b 27 c 13 9 8 x 20 = a 28 b 160 c 12 10 9 x 20 = a 11 b 29 c 180 11 10 x 20 = a 200 b 30 c 10