NAME..........................................................................INDEX NO………………..…
SCHOOL...........................................................................SIGNATURE………………
ADM NO…………. ………………………..........CLASS………………………………………..
121/1
MATHEMATICS
Form 4
JANUARY, 2021
2 ½ HOURS
THE EAGLE JOINT EXAMS
Kenya Certificate of Secondary Education.
INSTRUCTIONS TO CANDIDATES
Write your name and index number in the spaces provided at the top of this page.
This paper consists of two sections: Section I and Section II.
Answer all questions in section I and ONLY five questions from Section II.
Show all the steps in your calculations, giving your answers at each stage in the spaces
below each question.
Marks may be given for correct working even if the answer is wrong.
Non- programmable silent electronic calculators and KNEC Mathematical tables may be
used.
For Examiner’s Use Only
SECTION I
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Total
SECTION II
17 18 19 20 21 22 23 24 Total
Grand
Total
This paper consists of 15 pages. Candidates should check the question paper to ensure that all
the pages are printed as indicated and no questions are missing.
1
, SECTION I (50MARKS)
1. Without using a calculator evaluate; (3mks)
44−−28 82 ×−12−24
-
12 ×−2 96 ÷12 × 9
2. Simplify; ( x +2 y )( x−2 y )−¿ ¿ (4mks)
3. A cylindrical pipe 5 metres long has an external diameter 28 millimetres and
an external diameter of 42 millimetres. The density of the material that makes
the pipe is 1.45g/cm3. Calculate the mass of the pipe in kilograms.
( Take π = 22/7) (4mks)
2
SCHOOL...........................................................................SIGNATURE………………
ADM NO…………. ………………………..........CLASS………………………………………..
121/1
MATHEMATICS
Form 4
JANUARY, 2021
2 ½ HOURS
THE EAGLE JOINT EXAMS
Kenya Certificate of Secondary Education.
INSTRUCTIONS TO CANDIDATES
Write your name and index number in the spaces provided at the top of this page.
This paper consists of two sections: Section I and Section II.
Answer all questions in section I and ONLY five questions from Section II.
Show all the steps in your calculations, giving your answers at each stage in the spaces
below each question.
Marks may be given for correct working even if the answer is wrong.
Non- programmable silent electronic calculators and KNEC Mathematical tables may be
used.
For Examiner’s Use Only
SECTION I
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Total
SECTION II
17 18 19 20 21 22 23 24 Total
Grand
Total
This paper consists of 15 pages. Candidates should check the question paper to ensure that all
the pages are printed as indicated and no questions are missing.
1
, SECTION I (50MARKS)
1. Without using a calculator evaluate; (3mks)
44−−28 82 ×−12−24
-
12 ×−2 96 ÷12 × 9
2. Simplify; ( x +2 y )( x−2 y )−¿ ¿ (4mks)
3. A cylindrical pipe 5 metres long has an external diameter 28 millimetres and
an external diameter of 42 millimetres. The density of the material that makes
the pipe is 1.45g/cm3. Calculate the mass of the pipe in kilograms.
( Take π = 22/7) (4mks)
2
