Los 100 cálculos sencillos más difíciles para alumnos de cuarto grado
Las 100 preguntas de operación son las siguientes:
1 25x42x4
2. p >4, 4x25+16x25
5, 4x25x16x25
6, 36x99
7, (25+15)x4
8 , (25x15)x4
9, 49x49+49x51
10, 49x99+49
11, (68+32)x5
12. 5x289x2
13. 68+32x5
14. (125x25)x4
15. > 16. 25x64x125
17. 85x82+82X5
18.
21, 88x102
22, 87x99+87
23, 79x25+25
24, 76x101-76
25, 378+527+73
26, 167+289+33
27, 58+39+42+61
28, 36x45+ 36x56-36
29, 66x93+93x33+93
30, 99x32
31, 46x25
32, 36x45+36x56- 36
33, 66x93+93x33+93
34, 97+89+11
35, 88x102
36, 125x88
37, 26+47+174
38, 85+47+15+53
39, 815+49+65+14+11
40, 72x125
41, 18+77+423+48
42, 71+73+69+74+68+769
43, 123x64+123x36
44, 39x4x5
45, 125x6x8
46, 25x24
47, 32x305
48, 103x15
49, 78x24-24x68
50, 49x49+49x(46)x25
51, (68+32)x5
52, 68+32x5
53, 49x99+49
54, 36x97-58x36+61x36
55 , 3000÷25÷4
56, 720÷15÷6
57, 150÷25÷2
58, 5000÷8÷125
59, 99x23+23
60, 56x7+45x7-7
61, 125x13x87
62, 2÷6x(51 +19 )
63, 3,4+4,6-2,9
64, 900-178-122
65, (79+21)÷20
66, 125x72x4
67, 728x79+272x79
68, 8.59+2.57+3.43+5.47
69, (24)x25
p>70, 99x11
71, 49.62-2717-19.62
72, 1546-(546-239)
73 , (2 4)x25
74, 9x37+9x63
75, 5x289x
235x37+65x37
76, 124x25-25x24
77, 85x82+82x15
78, 32x(203)
79 , 38x29+38
80, (125x25)x4
81, 75x299+75
82, (4+8)x125
83, 25x(24)
84, 45x7+55x7
85, 8x27+8x73
86, 103x32
87, 329x101
88, 9x37+9x63
89, 99x23
90, 36x97-58x36+61x36
91, (125 +17)x8
92, 102x10102
93, 8x12+8x7
94, 5000÷8÷125
95 , 165+204+335+96
96, 3000-25÷4
97, 56x7+45x7-7
98, 720÷15÷6
99, 150÷25÷2
100, 81x11