Mathematics - Cube and Cube Roots   Online Practice Sheet


Cube

The cube of a number is calculated by multiplying a number itself by 3 times. If you consider a number n, then the cube of a number n is n. Here, n is the natural number.


Example:

1, 8, 27 are the cube number of the numbers 1, 2, and 3 respectively.

Cube of 9 = 9 × 9 × 9 = 729
Cube of 8 = 8 × 8 × 8 = 512
Cube of 6 = 6 × 6 × 6 = 216

Cube roots

Cube Root of a Number is the inverse of finding the cube of a number. If the cube of a number 3 is 27, then the cube root of 27 is 3.

  x                        ∛x                        ∛(10x)                        ∛(100x)            
1
1.000
2.154
6.642
2
1.260
2.714
5.848
3
1.442
3.107
6.694
4
1.587
3.420
7.368
5
1.710
3.684
7.937
6
1.817
3.915
8.434
7
1.913
4.121
8.879
8
2.000
4.309
9.283
9
2.080
4.481
9.655
10
2.154
4.642
10.00
11
2.224
4.791
10.32
12
2.289
4.932
10.63
13
2.351
5.066
10.91
14
2.410
5.192
11.12
15
2.466
5.313
11.45
16
2.520
5.429
11.70
17
2.571
5.540
11.93
18
2.621
5.646
12.16
19
2.668
5.749
12.39
20
2.714
5.848
12.60
21
2.759
5.944
12.81
22
2.802
6.037
13.01
23
2.884
6.127
13.20
24
2.884
6.214
13.39
25
2.924
6.300
13.57
26
2.962
6.383
13.75
27
3.000
6.463
13.92
28
3.037
6.542
14.09
29
3.072
6.619
14.26
30
3.107
6.694
14.42
31
3.141
6.768
14.58
32
3.175
6.840
14.70
33
3.208
6.910
14.89
34
3.240
6.980
15.04
35
3.271
7.047
15.18
36
3.302
7.114
15.33
37
3.332
7.179
15.47
38
3.362
7.243
15.60
39
3.391
7.306
15.74
40
3.420
7.368
15.87
41
3.448
7.429
16.01
43
3.503
7.548
16.26
44
3.530
7.606
16.39
45
3.557
7.663
16.51
46
3.583
7.719
16.63
47
3.609
7.775
16.75
48
3.634
7.830
16.87
50
3.684
7.937
17.10
51
3.708
7.990
17.21
52
3.733
8.041
17.32
53
3.756
8.093
17.44
54
3.780
8.143
17.54
55
3.803
8.193
17.65
56
3.826
8.243
17. 76
57
3.849
8.291
17.86
58
3.871
8.340
17.97
59
3.893
8.387
18.07
60
3.915
8.434
18.17
61
3.936
8.481
18.27
62
3.958
8.527
18.37
63
2.979
8.573
18.47
64
4.000
8.618
18.57
65
4.021
8.662
18.66
66
4.041
8.707
18.76
67
4.062
8.750
18.85
68
4.082
8.794
18.95
69
4.102
8.837
19.04
70
4.121
8.879
19.13
71
4.141
8.921
19.22
72
4.160
8.963
19.31
73
4.179
9.004
19.40
74
4.198
9.045
19.49
75
4.217
9.086
19.57
76
4.236
9.126
19.66
77
4.254
9.166
19.75
78
4.273
9.205
19.83
79
4.291
9.244
19.92
80
4.039
9.283
20.00
81
4.327
9.322
20.08
82
4.344
9.360
20.17
83
4.362
9.398
20.25
84
4.380
9.435
20.33
85
4.397
9.473
20.41
86
4.414
9.510
20.49
87
4.431
9.546
20.57
88
4.448
9.583
20.65
89
4.465
9.619
20.72
90
4.481
9.655
20.80
91
4.498
9.691
20.88
92
4.514
9.726
20.95
93
4.531
9.761
21.03
94
4.547
9.796
21.10
95
4.563
9.830
20.18
96
4.579
9.865
21.25
97
4.595
9.899
21.33
98
4.610
9.933
21.40
99
4.626
9.967
21.47
100
4.642
10
21.54