Choose the best answer: (5x1=5)
1. The cube root of 343 is ……...
(a) 4 (b) 5 (c) 6 (d) 7
2. Which of the following is a perfect cube? ……...
(a) 10000 (b) 243 (c) 743 (d) 27000
3. The volume of a cubical box is 64 cm2
. Its side is ……...
(a) 1 (b) 2 (c) 3 (d) 4
4. The value of (1
2
)
-5
is ……...
(a) 1
32
(b) −1
32
(c) 32 (d) -32
5. The exponential form of 32
x3-5
x36 is ……...
(a) 32
(b) 33
(c) 34
(d) 35
II Answer the following : (3x2=6)
1. Evaluate (5-1
x 2-1
) x 6-1
.
2. Write 0.000000564 in standard form
3. Find the cube root of 10648 by prime factorization method.
III Answer the following : (3x3=9)
1. Show that 0.001728 is a cube of a rational number.
2. Find the value of m when5
÷5
3
5
2
= 5
3
3. (a) Micron is equal to 1
10000
m. Write its standard form.
(b) What is the value of [ (-1)-1
]
-1
.
(c) The distance of the sun from the Earth is 149,600, 000, 000m. Express it in a standard ]
form.
*******
Answers
Answered by
1
Answer:
- d (7)
- d (27000)and others questions is not clear sorry
Answered by
0
Answer:
Q-1
d-7
Q-2
c-743
Q-3
d-4
Q-4
a-132
Q-5
c-34
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