I. Choose the correct answer (1 X 20 = 20)
1. Which of the following is not a square number?
a. 144
b. 256
c. 324
d. 490
2. 43,60,000 in standard form is
a. 4.36 x 104
b. 4.36 x 105
c. 4.36 x 106
d. 4.36 x 103
3. Cube of -1/2 is
a. 1/4
b. 1/8
c. -1/8
d. -8
4. The number of non -square numbers between 1002
and 1012
is
a. 201
b. 199
c. 200
d. 100
5. (3/4)3
x (4/3 )
2
is equal to
a. 1
b. (3/1)5
c. (4/3)5
d. 3/4
6. Which of the following cannot be the unit digit of a square number?
a. 0
b. 2
c. 1
d. 9
7. The cube of 0.7 is
a. 0.343
b. 0.0343
c. 3.43
d. 34.3
8. (15)5
is
a. 5
3
x 35
b. 5
5
x 35
c. 5
3
x 32
d. 5
2
x 33
9. The square root of 1.96 is
a. 0.14
b. 1.4
c. 1.2
d. 0.12
10.The smallest perfect cube of 2 digit is
a. 16
b. 25
c. 27
d. 36
11.( 20 + 40
) x 32
is
a. 9
b. 2/9
c. 18
d. 0
12.9
2
when expressed as the sum of two consecutive integers is
a. 40 + 41
b. 50 + 31
c. 36 + 45
d. 72 + 9
13.The unit digit of the cube of 122 is
a. 4
b. 8
c. 2
d. 6
14.The value of [{( -2)2
}
-2
]
-1
is
a. -16
b. -8
c. 16
d. 8
15.Which of the following are Pythagorian triplets?
a. 3 , 4, 5
b. 20 ,24, 29
c. 30,40,50
d. 7,24,25
16.The square root of 3025 will have
a. 2digits
b. 3digits
c. 4digits
d. 5digits
17.4
-3
expressed as a power with base 2 is
a. 2
-3
b. 2
3
c. 2
-6
d. 2
-8
18.The value of √27 3
× √64 3
is
a. 24
b. -12
c. 12
d. -24
19.If a number has 2 zeroes at the end, then the square will have
a. 3 zeroes
b. 4 zero
c. 5 zeroes
d. 6 zeroes
20.The largest 4-digit number which is a perfect cube is
a. 9999
b. 9261
c. 8000
d. 9899
II. DO AS DIRECTED (2 x 7 =14)
21.Write the multiplicative inverse of:
a. 8
-2
b. 1/103
c. (4/3)-5
d. 5/7
22.Is 196 a square number? If so, find the square root of 196.
23.Find the cube root of 12167 through estimation.
24.Simplify and express your answer in exponential form.
(3/7)-2
X ( 3/7)-3
25.Find the least number that must be subtracted from 3250 so as to get
a perfect square. Also find the square root of the perfect square
obtained.
26.Using prime factorisation method find the cube root of 4096
27.Find the square of 120 without actual multiplication.
III. SOLVE THE FOLLOWING (2 X 3 = 6)
28.
a. Write in standard form
1) 0.00000000597 2) 9712000000
b. 3
-5
x 10-5
x 25
---------------------
5
-5
x 6-3
c. Find the value of m if:
( -5)m+1
x ( -5)5
= (-5)7
29.1225 chairs are to be arranged in a hall in such a way that each row
contains as many chairs as the number of rows. Find the number of
rows and the number of chairs in each row.
Answers
Answer:
1) d)490
2)c) 4.36×106
it is too much long it can't solve it
Answer:
I. Choose the correct answer (1 X 20 = 20)
1. Which of the following is not a square number?
a. 144
b. 256
c. 324
d. 490
2. 43,60,000 in standard form is
a. 4.36 x 104
b. 4.36 x 105
c. 4.36 x 106
d. 4.36 x 103
3. Cube of -1/2 is
a. 1/4
b. 1/8
c. -1/8
d. -8
4. The number of non -square numbers between 1002
and 1012
is
a. 201
b. 199
c. 200
d. 100
5. (3/4)3
x (4/3 )
2
is equal to
a. 1
b. (3/1)5
c. (4/3)5
d. 3/4
6. Which of the following cannot be the unit digit of a square number?
a. 0
b. 2
c. 1
d. 9
7. The cube of 0.7 is
a. 0.343
b. 0.0343
c. 3.43
d. 34.3
8. (15)5
is
a. 5
3
x 35
b. 5
5
x 35
c. 5
3
x 32
d. 5
2
x 33
9. The square root of 1.96 is
a. 0.14
b. 1.4
c. 1.2
d. 0.12
10.The smallest perfect cube of 2 digit is
a. 16
b. 25
c. 27
d. 36
11.( 20 + 40
) x 32
is
a. 9
b. 2/9
c. 18
d. 0
12.9
2
when expressed as the sum of two consecutive integers is
a. 40 + 41
b. 50 + 31
c. 36 + 45
d. 72 + 9
13.The unit digit of the cube of 122 is
a. 4
b. 8
c. 2
d. 6
14.The value of [{( -2)2
}
-2
]
-1
is
a. -16
b. -8
c. 16
d. 8
15.Which of the following are Pythagorian triplets?
a. 3 , 4, 5
b. 20 ,24, 29
c. 30,40,50
d. 7,24,25
16.The square root of 3025 will have
a. 2digits
b. 3digits
c. 4digits
d. 5digits
17.4
-3
expressed as a power with base 2 is
a. 2
-3
b. 2
3
c. 2
-6
d. 2
-8
18.The value of √27 3
× √64 3
is
a. 24
b. -12
c. 12
d. -24
19.If a number has 2 zeroes at the end, then the square will have
a. 3 zeroes
b. 4 zero
c. 5 zeroes
d. 6 zeroes
20.The largest 4-digit number which is a perfect cube is
a. 9999
b. 9261
c. 8000
d. 9899
II. DO AS DIRECTED (2 x 7 =14)
21.Write the multiplicative inverse of:
a. 8
-2
b. 1/103
c. (4/3)-5
d. 5/7
22.Is 196 a square number? If so, find the square root of 196.
23.Find the cube root of 12167 through estimation.
24.Simplify and express your answer in exponential form.
(3/7)-2
X ( 3/7)-3
25.Find the least number that must be subtracted from 3250 so as to get
a perfect square. Also find the square root of the perfect square
obtained.
26.Using prime factorisation method find the cube root of 4096
27.Find the square of 120 without actual multiplication.
III. SOLVE THE FOLLOWING (2 X 3 = 6)
28.
a. Write in standard form
1) 0.00000000597 2) 9712000000
b. 3
-5
x 10-5
x 25
---------------------
5
-5
x 6-3
c. Find the value of m if:
( -5)m+1
x ( -5)5
= (-5)7
29.1225 chairs are to be arranged in a hall in such a way that each row
contains as many chairs as the number of rows. Find the number of
rows and the number of chairs in each row.