0713779527
MARKING SCHEME
MATHEMATICS
FORM 1 TERM 1
INSTRUCTIONS: Answer all questions in the spaces provided
Calculators should not be used
1. Express the following numbers in words:-
(a) 74 379 652 137 (2 marks)
Seventy four billion three hundred and seventy nine million six hundred and fifty two
thousand one hundred and thirty seven.
(b) 3 486 789 (2 marks)
Three million four hundred and eighty six thousand seven hundred and eighty nine
2. Round off the following numbers to the nearest number indicated in bracket (4 marks)
(a) 379(10) = 380
(b) 89 365(100) = 89,400.
(c) 249 889(1000)= 25,000.
(d) 89 123 564(1 000 000)= 89,000,000
3. Three cisterns in a public lavatory are designed to flush at at intervals 0f 8, 13 , 15 seconds. After
how many minutes will they flush together again?
2 8 13 15
2 4 13 15
2 2 13 15
3 1 13 15 √
5 1 13 5
13 1 13 1
1 1 1
LCM = 2 x 2 x 2 x 3 x 5 x 13 = 1560 sec √
,0713779527
1560
= 26 minutes √
60
4. Evaluate 96 ÷ 6 + 7 x 15 – 14 x 5 ( 3 marks)
Bodmas
=16 + 7 x 15 – 14 x 5
= 16 + 105 – 70
=121 – 70 = 51
5. A vegetable vendor had 1348 cabbages. He sold 750 on the first day and 240 on the second day.
He added 462 to the remaining stock on the third day.
(a) How many cabbages did he have at the end? (2 marks)
1348 – (750 + 240) + 462
= 820
(b) If he sold all the cabbages at an average price of sh. 12 each, how much money did he
collect? (2marks)
1348 + 462 =1810
1810 x 12 = sh. 21,720
6. Express the following composite numbers as a product of prime factors (3 marks)
(a) 81 = 3 x 3 x 3 x 3
(b) 1386 = 2 x 3 x 3 x 7 x 11
(c) 2057 = 11 x 11 x 17
MARKING SCHEME
MATHEMATICS
FORM 1 TERM 1
INSTRUCTIONS: Answer all questions in the spaces provided
Calculators should not be used
1. Express the following numbers in words:-
(a) 74 379 652 137 (2 marks)
Seventy four billion three hundred and seventy nine million six hundred and fifty two
thousand one hundred and thirty seven.
(b) 3 486 789 (2 marks)
Three million four hundred and eighty six thousand seven hundred and eighty nine
2. Round off the following numbers to the nearest number indicated in bracket (4 marks)
(a) 379(10) = 380
(b) 89 365(100) = 89,400.
(c) 249 889(1000)= 25,000.
(d) 89 123 564(1 000 000)= 89,000,000
3. Three cisterns in a public lavatory are designed to flush at at intervals 0f 8, 13 , 15 seconds. After
how many minutes will they flush together again?
2 8 13 15
2 4 13 15
2 2 13 15
3 1 13 15 √
5 1 13 5
13 1 13 1
1 1 1
LCM = 2 x 2 x 2 x 3 x 5 x 13 = 1560 sec √
,0713779527
1560
= 26 minutes √
60
4. Evaluate 96 ÷ 6 + 7 x 15 – 14 x 5 ( 3 marks)
Bodmas
=16 + 7 x 15 – 14 x 5
= 16 + 105 – 70
=121 – 70 = 51
5. A vegetable vendor had 1348 cabbages. He sold 750 on the first day and 240 on the second day.
He added 462 to the remaining stock on the third day.
(a) How many cabbages did he have at the end? (2 marks)
1348 – (750 + 240) + 462
= 820
(b) If he sold all the cabbages at an average price of sh. 12 each, how much money did he
collect? (2marks)
1348 + 462 =1810
1810 x 12 = sh. 21,720
6. Express the following composite numbers as a product of prime factors (3 marks)
(a) 81 = 3 x 3 x 3 x 3
(b) 1386 = 2 x 3 x 3 x 7 x 11
(c) 2057 = 11 x 11 x 17
