CUBE AND CUBE ROOT WORKSHEET

Problem 1 :

The cube root of 125 × 64 is

a.   30     b. 20     c. 40     d. 10

Problem 2 :

Volume of cube is 343 cm³, its side is

a.   9 cm     b. 6 cm     c. 9 cm     d. 7 cm

Problem 3 :

The unit digit of cube of 7812 is

a.   8     b. 4     c. 2     d. 6

Problem 4 :

The cube root of 729 is

a.   3     b. 7     c. 9     d. 4

Problem 5 :

36 × 6 is

a.    6     b. 4     c. 16     d. 2

Problem 6 :

The cube of -1/2 is

a.    1/4     b. 1/8     c. -1/8     d. -8

Problem 7 :

By what number should 81 be multiplied to make it a perfect cube

a.   9     b. 1     c. 3     d. -3

Problem 8 :

Volume of cube whose edge is 4 cm

a.   64cm³     b. 27cm³     c. 2cm³     d. 64cm²

Problem 9 :

Cube root of 0.001 is

a.   -0.1     b. -0.01     c. 0.1     d. -0.13

Problem 10 :

Cube root of (-7)³ × (-3)³ is

a.   -21     b. 21     c. -11     d. 10

Problem 11 :

Cube of -4/7 is

a.   -64/69    b. -64/49     c. -64/343     d. 64/343

Problem 12 :

Cube root of 0.001728 is

a.   0.12    b. -0.12     c. -10     d. -0.0012

Problem 13 :

Three numbers are in the ratio 3: 4: 5. If the sum of their cubes is -1728, find the three numbers.

Problem 14 :

Evaluate 5 1182/2197

Problem 15 :

Evaluate  (-91125 × 512)

Solution

 1)  202) a = 7 cm3) 84)  95)  66) -1/87) 9 8)   V = 64 cm³9)  0.110)  2111)   -64/34312)  0.1213)  -6, -8, and -10.14)  23/1315)  -360

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