Kerala Syllabus Class 5 Mathematics - Unit 5 Part Number - Questions and Answers | Teaching Manual 

Questions and Answers for Class 5 Mathematics - Unit 5 Part Number - Study Notes | Text Books Solution STD 5 - Maths: Unit 5 Part Number - Questions and Answers | ഭാഗങ്ങളുടെ സംഖ്യകൾ - ചോദ്യോത്തരങ്ങൾ 

അഞ്ചാം ക്ലാസ്സ്‌  Mathematics - Unit 5 Part Number എന്ന പാഠം ആസ്പദമാക്കി തയ്യാറാക്കിയ ചോദ്യോത്തരങ്ങള്‍. ഈ അധ്യായത്തിന്റെ Teachers Handbook, Teaching Manual എന്നിവ ഡൗൺലോഡ് ചെയ്യാനുള്ള ലിങ്ക് ചോദ്യോത്തരങ്ങളുടെ അവസാനം നൽകിയിട്ടുണ്ട്.

STD 5 - Maths: Unit 5 Part Number - Questions and Answers

♦ Textbook Activities - Page 61
1. Draw a square with each side 3 centimetres. Mark off 1 centimetre from the left on the top and bottom sides, and join them.
i. What part of the square is the smaller rectangle?
Here, the smaller rectangle is obtained by dividing the square into three equal parts. So the small rectangle will be ⅓ part of the whole square. 

ii.  And the larger?
The larger rectangle is equal to two smaller rectangles, so it is (⅔) part of the square.

iii. Colour the ⅓ part with red and the ⅔ part with green.
iv.  Is there another way of dividing the square into ⅓ and ⅔ parts?
Yes, there are.
See the following figures.
2.  Draw a rectangle like this:
Colour ⅔ of it with green and ⅓ with red.
Mark points on the top and bottom sides of the rectangle, 2cm from the right. Join these two points to form a larger and smaller rectangle. The larger will be ⅔ rd of the original. So colour it green. The smaller will be ⅓ rd of the original. So colour it red.
Also like this:
Divide the rectangle in ⅔ and ⅓ parts by marking points on the left and right side, 1 cm from the bottom. The top part will be ⅔, and the bottom will be ⅓.
Find out other ways to do this.
♦ Textbook Activities - Page 65
1. The pictures below show a circle divided into eight equal parts and coloured two at a time:
Describe the coloured part of each in two different ways and write both of them as fractions in the box below each picture.
(i) ²⁄₈, ¼
(a) 2 parts of a circle, which are divided into 8 equal parts.
(b) 1 part of a circle, which is divided into 4 equal parts.

(ii) ⁴⁄₈, ½
(a) 4 parts of a circle, which are divided into 8 equal parts.
(b) 1 part of a circle, which is divided into 2 equal parts.

(iii) ⁶⁄₈, ¾
(a) 6 parts of a circle, which is divided into 8 equal parts.
(b) 3 parts of a circle, which is divided into 4 equal parts.

2. The pictures below show circles divided into twelve equal parts with some of the parts coloured:
Describe the coloured part of each in two different ways and write both of them as fractions in the box below each picture.
(i) ³⁄₁₂, ¼
(a) 3 parts of a circle, which is divided into 12 equal parts.
(b) 1 part of a circle, which is divided into 4 equal parts.

(ii) ²⁄₁₂, ⅙
(a) 2 parts of a circle, which is divided into 12 equal parts.
(b) 1 part of a circle, which is divided into 6 equal parts.

(iii) ⁴⁄₁₂, ⅓
(a) 4 parts of a circle, which is divided into 12 equal parts.
(b) 1 part of a circle, which is divided into 3 equal parts.

(iv) ⁶⁄₁₂, ½
(a) 6 parts of a circle, which is divided into 12 equal parts.
(b) 1 part of a circle, which is divided into 2 equal parts.

(v) ⁹⁄₁₂, ¾
(a) 9 parts of a circle, which is divided into 12 equal parts.
(b) 3 parts of a circle, which are divided into 4 equal parts.

(vi) ⁸⁄₁₂, ⅔
(a) 8 parts of a circle, which is divided into 12 equal parts.
(b) 2 parts of a circle, which are divided into 3 equal parts.

3. Draw a square and divide it as shown below:
Colour ⅛ of the square with red, ¼ with green and ½ with blue.
i. Is there any part left uncoloured?
ii.  What part of the whole square is it?
iii.  Write it as a fraction.
⅛ part of the square is red in colour.
¼ part of the square is green in colour.
½ part of the square is blue in colour.
⅛ part of the square is left uncoloured.

♦ Textbook Activities - Page 68
1. In each of the pictures below, find how much is coloured and write it as a fraction in the box on the right.
(1) One circle and one-fourth of another circle
(2) One circle and one-third of another circle.
(3) Two circles and one-fourth of another circle.
(4) Three circles and one-sixth of another circle.

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