Exercise No. 1E

NOTE: Answers to all questions are given at the end of this exercise.

Question No. 1:

Find all the perfect squares that are between 50 and 150.

 

Question No. 2:

Copy the following numbers and circle those that are perfect squares:

8, 16, 18, 25, 33, 49, 50, 72, 81, 100, 1, 125, 144, 200, 169, 111, 225, 400

 

Question No. 3:

Replace each box with the correct answer:

(a) Given that 8 x 8 = 64, then √64 =

(b) Given that 12 x 12 = 144, √144 =

(c) Given that 17 x 17 = 289, √289 =

(d) Given that (3 x 4 x 5) x (3 x 4 x 5) = 3600, then √3600 =

 

Question No. 4:

Find the square root of each of the following numbers:

(a) 36

(b) 81

(c) 196

(d) 256

(e) 441

 

Question No. 5:

Use a calculator to factorise the following (into prime number) and hence find the sequence root of each of the following numbers:

(a) 1156

(b) 1296

(c) 1764

(d) 9801

(e) 11025

(f) 34596

 

Question No. 6:

Replace each box with the correct answer:

(a) Given that 11 x 11 x 11 = 1331, then ³√64 = 

(b) Given that 19 x 19 x 19 = 6859, ³√6859 = 

(c) Given that 13 x 13 x 13 = 2197, ³√2197 = 

(d) Given that (3 x 4) (3 x 4) (3 x 4) = 1728, then ³√1728 = 

 

Question No. 7:

Using a calculator, completely factorise each of the following numbers and hence find its cube root:

(a) 3375

(b) 4096

(c) 21952

(d) 46656

(e) 91125

(f) 373248

 

Question No. 8:

Find the area of square of side 56 cm.

 

Question No. 9:

What is the length of a side of a square whose area is 2304 cm²?

 

Question No. 10:

What is the volume of cube of side 11 cm?

 

Question No. 11:

Given that the volume of a cube is 2774 cm³, find the length of its edge.


Answers

(from left to right)

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