คณิ�ตค�ดเร็�วโดยใช้�นิ้��วมื�อ
นิ้��วมื�อกั�บต�วเลข
มื�อขวาแทนิ้
หล�กัสิ�บ หล�กัหนิ้�วยแทนิ้
มื�อซ้�าย
มื�อซ้�ายหล�กัสิ�บ มื�อขวาหล�กัหนิ้�วย
1
3
2
10
4
30
20
50
40
5
มื�อซ้�ายหล�กัสิ�บ มื�อขวาหล�กัหนิ้�วย
6
7
8
9
60
80
70
90
00 1 2 3 4
สิ�ญล�กัษณิ"นิ้��วมื�อแทนิ้ต�วเลข
5 6 7 8 9
10 11 12 13 14
15 16 17 18 19
30 31 32 33 34
25 26 27 28 29
20 21 22 23 24
35 36 37 38 39
40 41 42 43 44
45 46 47 48 49
50 51 52 53 54
55 56 57 58 59
60 61 62 63 64
65 66 67 68 69
90 91 92 93 94
70 71 72 73 74
75 76 77 78 79
80 81 82 83 84
85 86 87 88 89
95 96 97 98 99
มืาลองค�ดเลขกั�นิ้เถอะนิ้�องๆ ค�ดให�ท�นิ้ นิ้ะคะ
23 + 11 - 14 + 7 =
27
6 + 23 - 11 - 7 =
11
26 - 10 + 52 - 3 =
65
24 + 5 - 16 - 11 =
2
22 + 52 - 54 + 25
45
35 + 52 - 55 + 52 =
84
34 - 22 + 55 + 32 =
99
54 + 5 - 50 - 4 =
5
99 - 43 - 51 + 2 =
7
7 + 2 - 3 - 5 + 6 =
7
9 - 7 +5 + 1 - 8 =
0
13 + 25 + 1 - 6 - 22 =
11
15 + 33 + 51 - 54 =
45
45 + 53 - 7 + 8 - 76 =
23
14 + 75 - 8 + 6 =
87
78 - 75 + 1 - 4 =
0
89 - 73 + 3 - 8 =
11
24 + 15 + 50 - 55 =
34
55 + 11 - 5 + 6 =
67
69 - 17 + 36 - 75 =
13
63 + 26 - 17 + 15 =
87
45 - 35 + 53 + 16 =
79
19 + 12 + 17 - 37 =
11
36 + 52 - 67 + 76 - 20 =
77
13 + 76 - 88 + 6 - 2 =
5
15 + 2 + 82 - 55 - 31 =
13
22 + 11 + 56 - 78 =
11
2 + 2 + 5 - 3 =
6
9 - 8 + 7 - 6 =
2
4 + 5 - 2 - 1 =
6
3 - 2 + 5 + 2 =
8
4 - 2 + 1 + 5 =
8
9 - 6 -1 + 7 =
9
98 - 87 + 16 - 15 =
12
16 + 72 - 76 +67 =
79
22 + 77 - 86 + 55 =
68
32 + 17 - 28 + 67 =
88
17 + 9 + 50 - 66 =
10
13 + 11 + 9 - 3 =
30
51 + 39 + 8 - 23 =
75
36 + 9 + 50 - 85 =
10
19 + 13 + 9 + 52 =
93
39 + 4 + 51 - 43 =
51
51 + 17 + 17 + 5 =
90
42 + 55 - 87 - 9 =
1
37 - 8 + 11 - 13 =
27
1 + 19 - 12 + 7 =
15
82 - 63 + 2 - 14 =
7
64 - 55 + 7 + 9 =
25
78 + 2 - 11 + 2 =
71
18 + 7 - 6 + 12 =
31
28 + 5 - 4 + 19 =
48
32 - 18 + 7 + 53 =
74
64 - 55 + 8 + 5 =
22
82 - 21 + 4 - 8 =
57
13 + 3 + 15 - 8 =
23
37 + 5 + 2 + 11 =
55
87 + 2 - 55 + 1 =
35
3 + 8 + 23 + 12 =
46
9 + 21 + 13 + 2 =
45
37 - 2 - 14 + 19 =
40
42 - 15 - 23 + 8 =
12
51 + 14 - 22 + 3 =
46
3 + 42 - 11 + 16 =
50
6 + 51 - 33 + 46 =
70
15 + 67 + 3 + 2 =
87
74 + 1 + 9 - 54 =
30
45 + 9 + 18 + 6 =
78
3 + 72 + 7 - 38 =
44
75 - 4 - 26 + 5 =
50
74 - 27 - 7 - 38 =
9
22 + 13 + 9 - 8 =
36
2 + 76 + 6 - 69 =
15
12 - 6 + 7 - 8 =
5
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