Two Digit Subtraction without Regrouping
63 - 21 = 44 42 84 NH
49 - 18 = 31 36 67 NH
56 - 33 = 89 33 23 NH
78 - 37 = 411 40 42 NH
66 - 41 = 25 26 97 NH
59 - 9 = 49 50 68 NH
84 - 3 = 87 54 81 NH
67 - 6 = 61 73 7 NH
Two Digit Addition with Regrouping
84 - 28 = 52 62 56 NH
50 - 19 = 49 31 41 NH
73 - 54 = 19 21 27 NH
61 - 23 = 42 84 48 NH
73 - 54 = 19 21 27 NH
34 - 8 = 26 34 24 NH
41 - 9 = 50 31 32 NH
66 - 7 = 61 59 73 NH
55-8 = 47 64 49 NH
72 - 5 = 77 22 67 NH