# Lesson Notes By Weeks and Term - Junior Secondary School 1

Revision

SUBJECT: MATHEMATICS

CLASS:  JSS 1

DATE:

TERM: 2nd TERM

REFERENCE BOOKS

• New General Mathematics, Junior Secondary Schools Book 1
• Essential Mathematics for Junior Secondary Schools Book 1

WEEK ONE

TOPIC: Revision

• The value of 8 in 18214 is   (a) 8 units   (b) 8 tens  ( c) 8 hundreds  ( d) 8 thousands  (e) 8 ten thousands
• The  Roman numerals CXCIV represents the number (a) 194   (b) 186   (c ) 214   (d) 215  (e)  216.
• What is the number represented by                                                   ? (a) 32  (b) 40  (c) 28  (d) 39
• The value of 7 in 3.673 is (a) 7tenths    (b) 7 hundredths   (c) 7 units   (d) 7 hundredth.
•  Three million and four in figures is (a) 300004  (b) 300040 (c) 30000004 (d) 3000004
• What is the value of 1.2 km in metres? (a) 120m (b) 1 200m (c ) 12 000m  (d ) 120 000m
• Which of the following numbers is the largest?(a) 727345565 (b) 727245565  ( c )727445565 ( d) 726778876.
• \$114 million in digits only is  (a) \$1 200 000  (b) \$1 140 000  (c) \$1 250 000  (d) \$125 000
• Le 5 600 000 in digits and words is  (a) Le 56 million (b) Le 5.6 billion   (c) Le 0.56 billion  (d) Le 5.6 million
• 13 500 000mm in km is (a) 13.5 km  (b) 1.35 km  (c) 1350 km (d) 13500 km

1.  The value of  23 x 32 is (a) 1291(b) 658   (c) 729   (d)7 36
2.  The LCM of 12 and 15 is (a) 90    (b) 60    (c) 30 (d) 120
3. The HCF of 63and 90 is (a) 9 (b) 3 (c) 12   (d) 6
4. The first three common multiples of 3 and 11 are (a) 3, 33, 66 (b) 11, 33, 66 (c) 33, 66, 99 (d) 33, 44, 55
5. Which of the following is not a proper fraction?(a) ¼    (b) ¾   (c ) 3/2    (d) 5/8
6. Express 3 1/7 as an improper fraction is (a) 11/7   (b)217    ( c) 7/22   (d) 22/ 7
7. Express 99/5 as a mixed fraction  (a) 19 4/5   (b) 18 4/5    ( c) 19 5/4    (d) 18 5/4
8. Which of the following is not equivalent to ½ ? (a)9/18    (b)11/22    (c)15/30   (d)24/42
9. To express the fraction 30/48 in its lowest term, divide the numerator and demominator by  (a) 2        (b) 3        (c)5    (d) 6
10. 3.45 minutes , expressed as a fraction of  one hour is (a) 1/60     (b) 1/45    (c) ¾    (d)  4/5
11. The missing number in the fraction   3    = ?

4       20   is     (a) 6    (b) 9    (c) 12    (d)15

1. A woman bought 2 crates of eggs. ¼ of them are bad.  How many of the eggs are good?
(a) 36    (b) 24    (c) 48    (d)12
2.  Simplify 2 ½ + ¼   (a) 3 ¾    (b). 2 1/8   (c) 1 ¾   (d) 2 ¾.
3.  Simplify 4 2/5 – 3 ¼  (a) 1 3/20   (b) 3 2/5   (c) 1 7/20   (d) 1 5/8
4.  The common denominator of the fractions 3 1/6 – 2 ½ = 2 2/3  is  (a) 8    (b) 12    (c ) 6    (d) 15
5. Simplify 2 2/5 – 3 7/9 + 2 1/3  (a) 1 43/45   (b) 43/45    (c) 2 37/45    1 41/45
6. What is the sum of 1 ¾, 2 3/5 and 5 ¾(a) 3 1/30    (b) 5 1/60   (c) 7 1/60    (d) 8 1/50.
7. Find the length of a rectangle whose breadth and area are 7/20m and 8 1/5m2 (a) 23 3/7   (b) 21 2/7   (c) 1 7/20 (d) 8 11/20.
8. Simplify 5 ¼ + 1 1/6 – 3 2/3 (a) 5 11/4   (b) 2 ¾  ( c)  3 1/12     (d) 1 ¾
9. Simplify 11/25 x 1 4/11 (a) 2/3(b) 3/5(c) 2/5      (d) 4/5

Section B

1. Change this Roman figure to natural numbers (i)MMCDLXXI   (ii) MMMCLIV
2.  Write the following in figures: (a) fifteen trillion, six hundred and seventy one billion, three hundred and ninety one million, eighty eight thousand, five hundred and fifty five(b) three hundred and twenty-nine billion, five hundred and sixty two million, eight hundred and one thousand, four hundred and thirty three
3. Write these numbers in digits only: (a) Le 0.5 billion  (b) \$ 9.1 million
4. A drum holds 2 ½ litres of water when itsis  ¾ full. How many litres of water can it hold when  it is

(a) full,    b, two-third   (c)empty.

1. Simplify the following: ( a) 37/8 + 2 ¾  (b)      2 5/6  + 5 7/8(c)   2 4/5+  71/2 -83/10
2. Mr. Hope spends 1/3 of his earnings on food and ¼ on clothes.  He then saves the rest. What fraction does he (a) spend altogether(b) save?