1. CÁLCULO ABN FICHA 19
FICHA 19 – 0
12 + 4 = 9- 8=
3 + 2= 8- 2=
4 + 12 = 5- 3=
7+4= 9- 2=
6+4= 5- 2=
10 + 7 = 8- 6=
FICHA 19 – I
39 + 30 = 57 - 26 =
61 + 35 = 75 - 63 =
33 + 32 = 69 – 20 =
14 + 25 = 69 - 31 =
10 + 10 = 87 - 40 =
16 + 80 = 89 - 52 =
FICHA 19 – II
35 + 19 = 81 - 5 =
18 + 77 = 50 - 8 =
39 + 59 = 51 – 38 =
14 + 26 = 80 - 1 =
26 + 16 = 64 - 19 =
16 + 16 = 80 - 29 =
FICHA 19 – III
27 + 77 = 187 - 99 =
83 + 77 = 151 - 68 =
55 + 96 = 180 – 95 =
87 + 95 = 142 – 83 =
99 + 99 = 156 - 77 =
84 + 29 = 184 - 96 =
FICHA 19 – IV
129 + 99 = 908 - 699 =
116 + 635 = 232 - 138 =
189 + 135 = 288 – 219 =
146 + 509= 518 - 349 =
284 + 338 = 290 - 138 =
684 + 106 = 521 - 289 =

2. CÁLCULO ABN FICHA 20
FICHA 20 – I
45 X 5 = 57 X 4 =
12 X 2 = 10 X 3 =
38 X 3 = 18 X 4 =
13 X 4 = 15 X 2 =
27 X 5 = 54 X 5 =
44 X 2 = 34 X 3 =
FICHA 20 – II
45 X 5 = 57 X 6 =
12 X 2 = 10 X 8 =
38 X 3 = 18 X 7 =
13 X 4 = 15 X 9 =
27 X 5 = 54 X 6 =
44 X 3 = 34 X 7 =
FICHA 20 – III
113 X 15 = 189 X 42 =
42 X 22 = 790 X 34 =
167 X 43 = 464 X 41 =
249 X 40 = 395 X 25 =
53 X 55 = 513 X 54 =
175 X 21 = 418 X 32 =
FICHA 20 – IV
177 X 16 = 112 X 83 =
561 X 72 = 529 X 39 =
157 X 48 = 294 X 61 =
705 X 94 = 322 X 25 =
133 X 55 = 150 X 90 =
127 X 27 = 349 X 32 =
FICHA 19/20 – IV+
118 + 128 + 26 = 177 X 16 =
379 + 221 + 97 = 561 X 72 =
689 + 144 + 65 = 157 X 48 =
908 - 699 = 705 X 94 =
232 - 138 = 133 X 55 =
288 – 219 = 112 X 83 =

3. FICHA 21 - I
17 : 4 = 11 : 3 =
46 : 5 = 29 : 3 =
15 : 4 = 24 : 4 =
27 : 3 = 32 : 5 =
33 : 5 = 50 : 5 =
12 : 2 = 34 : 4 =