55- 44 = 66 - 55 = 77 - 66 = 93 - 63 =
22 - 11 = 33- 22 = 44- 33 = 88 - 77 =
42 + 8= 43 + 7 = 48 + 12= 35 + 35 =
10 + 10= 23+ 23 = 3×15 = 64+ 26 =
25 + 25 = 24 + 23 = 24 + 26 = 38 + 12 =
2×10= 50 - 20 = 20 - 20 = 21 - 21 =
45- 44 = 13×3 = 38 - 18= 77 - 77 =
56 + 44 = 45+ 55 = 24 + 16 = 50×2=
18+ 82= 50+ 15 = 20×2 = 12×2 =
48 - 18 = 39- 15 = 87 - 63 = 53- 27 =
22 - 11 = 33- 22 = 44- 33 = 88 - 77 =
42 + 8= 43 + 7 = 48 + 12= 35 + 35 =
10 + 10= 23+ 23 = 3×15 = 64+ 26 =
25 + 25 = 24 + 23 = 24 + 26 = 38 + 12 =
2×10= 50 - 20 = 20 - 20 = 21 - 21 =
45- 44 = 13×3 = 38 - 18= 77 - 77 =
56 + 44 = 45+ 55 = 24 + 16 = 50×2=
18+ 82= 50+ 15 = 20×2 = 12×2 =
48 - 18 = 39- 15 = 87 - 63 = 53- 27 =