Para Resolver mentalmente
Completar el número cien
75 + ______ = 100 | 49 + ______ = 100 | 13 + ______ = 100 | ______ + 34 = 100 |
9 + ______ = 100 | ______ + 5 = 100 | 10 + ______ = 100 | 81 + ______ = 100
|
16 + ______ = 100 | 65 + ______ = 100 | 76 + ______ = 100 | 57 + ______ = 100 |
______ + 80 = 100 | 56 + ______ = 100 | 14 + ______ = 100 | 64 + ______ = 100 |
______ + 15 = 100 | 63 + ______ = 100 | ______ + 26 = 100 | ______ + 24 = 100 |
Sumar decenas completas
11 + 40 = ________
| 10 + 36 = ________
| 28 + 40 = ________
| 90 + 23 = ________
|
18 + 70 = ________
| 100 + 37 = ________
| 58 + 30 = ________
| 95 + 100 = ________
|
92 + 100 = ________
| 90 + 90 = ________
| 10 + 22 = ________
| 73 + 60 = ________
|
68 + 40 = ________
| 25 + 30 = ________
| 90 + 40 = ________
| 100 + 63 = ________
|
29 + 20 = ________
| 60 + 80 = ________
| 37 + 50 = ________
| 50 + 38 = ________
|
Sumar decenas completas con un sumando que falta
______ + 50 = 145
| ______ + 30 = 78
| 26 + ______ = 66
| ______ + 20 = 88
|
______ + 51 = 131
| ______ + 50 = 74
| 70 + ______ = 154
| ______ + 45 = 145
|
98 + ______ = 168
| 25 + ______ = 125
| ______ + 70 = 104
| ______ + 40 = 51
|
25 + ______ = 35
| 87 + ______ = 167
| 98 + ______ = 198
| ______ + 68 = 128
|
74 + ______ = 144
| 90 + ______ = 188
| 53 + ______ = 83
| ______ + 29 = 39
|
Sumar un número de 1 cifra a un número de 2 cifras
74 + 6 = ______
| 90 + 8 = ______
| 2 + 59 = ______
| 6 + 15 = ______
|
7 + 77 = ______
| 52 + 6 = ______
| 2 + 31 = ______
| 38 + 4 = ______
|
31 + 8 = ______
| 9 + 57 = ______
| 6 + 98 = ______
| 3 + 21 = ______
|
2 + 98 = ______
| 89 + 4 = ______
| 7 + 35 = ______
| 8 + 85 = ______
|
26 + 6 = ______
| 9 + 31 = ______
| 3 + 88 = ______
| 2 + 88 = ______
|
Sumar un número de 1 cifra con un sumando que falta
18 + ______ = 27
| ______ + 5 = 90
| 5 + ______ = 32
| 2 + ______ = 81
|
______ + 81 = 86
| ______ + 49 = 54
| ______ + 9 = 72
| 73 + ______ = 78
|
88 + ______ = 92
| 6 + ______ = 45
| ______ + 2 = 47
| ______ + 4 = 92
|
5 + ______ = 35
| 3 + ______ = 79
| 8 + ______ = 20
| 2 + ______ = 63
|
80 + ______ = 87
| 3 + ______ = 62
| ______ + 53 = 62
| ______ + 8 = 27
|
Sumar un número de 2 cifras y dos números de 1 cifra
49 + 3 + 8 = ______
| 53 + 5 + 9 = ______
| 79 + 5 + 6 = ______
| 8 + 14 + 5 = ______
|
3 + 2 + 29 = ______
| 79 + 3 + 3 = ______
| 29 + 5 + 2 = ______
| 6 + 54 + 9 = ______
|
6 + 6 + 73 = ______
| 6 + 27 + 9 = ______
| 72 + 9 + 3 = ______
| 4 + 5 + 19 = ______
|
9 + 2 + 74 = ______
| 27 + 8 + 5 = ______
| 3 + 35 + 5 = ______
| 79 + 2 + 8 = ______
|
72 + 2 + 2 = ______
| 33 + 3 + 5 = ______
| 7 + 41 + 5 = ______
| 91 + 4 + 8 = ______
|
Sumar un número de 3 cifras y un número de 1 cifra
389 + 7 = ________
| 477 + 3 = ________
| 279 + 6 = ________
| 674 + 6 = ________
|
822 + 7 = ________
| 757 + 5 = ________
| 299 + 9 = ________
| 863 + 9 = ________
|
289 + 9 = ________
| 885 + 7 = ________
| 786 + 5 = ________
| 318 + 6 = ________
|
682 + 4 = ________
| 803 + 7 = ________
| 281 + 6 = ________
| 584 + 3 = ________
|
765 + 7 = ________
| 321 + 5 = ________
| 239 + 9 = ________
| 218 + 7 = ________
|
Sumar dos decenas completas y dos números de 1 cifra
90 + 30 + 3 + 2 = ______Â | 20 + 9 + 9 + 20 = ______Â | 20 + 6 + 3 + 10 = ______Â | 2 + 50 + 3 + 80 = ______Â |
3 + 3 + 60 + 30 = ______Â | 30 + 40 + 2 + 2 = ______Â | 90 + 80 + 6 + 2 = ______Â | 20 + 8 + 9 + 40 = ______Â |
10 + 90 + 2 + 6 = ______Â | 60 + 6 + 8 + 10 = ______Â | 40 + 70 + 4 + 9 = ______Â | 4 + 4 + 90 + 10 = ______Â |
30 + 5 + 3 + 90 = ______Â | 40 + 4 + 3 + 60 = ______Â | 50 + 8 + 8 + 90 = ______Â | 4 + 90 + 3 + 20 = ______ |
10 + 50 + 4 + 5 = ______Â | 70 + 50 + 3 + 3 = ______Â | 50 + 7 + 6 + 60 = ______Â | 9 + 90 + 2 + 70 = ______Â |
Sumar dos decenas completas y dos números de 1 cifra  con un sumando que falta
______ + 50 + 6 + 2 = 108Â | 40 + 50 + ______ + 2 = 101Â | ______ + 30 + 5 + 50 = 87Â | 7 + ______ + 30 + 50 = 91Â |
2 + 5 + 20 + ______ = 47 | 40 + 30 + ______ + 3 = 79Â | ______ + 50 + 2 + 2 = 104Â | 10 + 5 + 2 + ______ = 37Â |
40 + 20 + 3 + ______ = 69 | 6 + 9 + ______ + 50 = 75Â | ______ + 50 + 2 + 5 = 67Â | 50 + 70 + 2 + ______ = 129Â |
50 + 20 + ______ + 2 = 75Â | 60 + 10 + 2 + ______ = 76Â | 2 + ______ + 70 + 40 = 121Â | 10 + ______ + 2 + 70 = 87Â |
20 + 5 + 9 + ______ = 104Â | 10 + 6 + ______ + 70 = 92Â | 3 + 9 + 80 + ______ = 112Â | 3 + 30 + ______ + 20 = 60Â |
Si les sirvio, comenten y agrego más.