The document contains multiple math problems involving addition, subtraction, multiplication arranged in sets of exercises labeled Ficha 15, Ficha 16, and Ficha 15/6. The problems include single-digit and double-digit numbers.

1. CÁLCULO ABN FICHA 15
FICHA 15 – 0
3+2= 10 - 3 =
7+3= 7-5=
6+7= 10 - 1 =
9+1= 7-6=
3+4= 9-2=
11 + 6 = 6-4=
FICHA 15 – I
10 + 18 = 79 - 38 =
16 + 30 = 49 - 20 =
42 + 41 = 48 – 26 =
52 + 10 = 69 - 40 =
22 + 11 = 96 - 50 =
10 + 39 = 99 - 81 =
FICHA 15 – II
19 + 64 = 92 - 26 =
14 + 79 = 81 - 12 =
42 + 48 = 41 – 3 =
51 + 19 = 70 - 6 =
24 + 48 = 41 - 8 =
18 + 19 = 80 - 38 =
FICHA 15 – III
98 + 78 = 175 - 98 =
94 + 99 = 173 - 89 =
98 + 96 = 155 – 67 =
79 + 69 = 131 – 65 =
86 + 69 = 173 - 98 =
99 + 87 = 108 - 69 =
FICHA 15 – IV
314 + 119 = 333 - 189 =
439 + 318 = 803 - 195 =
329 + 618 = 504 – 265 =
299 + 489= 484 - 205 =
289 + 155 = 471 - 153 =
166 + 376 = 222 - 126 =

2. CÁLCULO ABN FICHA 16
FICHA 16 – I
83 X 5 = 51 X 4 =
44 X 2 = 29 X 3 =
74 X 3 = 95 X 4 =
28 X 4 = 39 X 2 =
91 X 5 = 93 X 5 =
12 X 2 = 27 X 3 =
FICHA 16 – II
83 X 5 = 51 X 6 =
44 X 2 = 29 X 8 =
74 X 3 = 95 X 7 =
28 X 4 = 39 X 9 =
91 X 5 = 93 X 6 =
12 X 2 = 27 X 9 =
FICHA 16 – III
283 X 51 = 751 X 24 =
444 X 22 = 929 X 43 =
174 X 34 = 195 X 14 =
628 X 40 = 839 X 52 =
391 X 55 = 393 X 45 =
512 X 12 = 227 X 23 =
FICHA 16 – IV
283 X 61 = 751 X 26 =
444 X 27 = 929 X 93 =
174 X 84 = 195 X 16 =
628 X 49 = 839 X 62 =
391 X 55 = 393 X 40 =
512 X 72 = 227 X 23 =
CÁLCULO ABN FICHA 15/6
FICHA 15/6 IV+
314 + 119 = 283 X 61 =
439 + 318 = 444 X 27 =
329 + 618 = 174 X 84 =
333 - 189 = 628 X 49 =
803 - 195 = 391 X 55 =
504 – 265 = 512 X 72 =