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## #1 2007-12-29 23:36:37

ganesh
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### Middle School Mathematics - IV

1. Write two rational numbers between 1/3 and 1/5.

2. Without actual division, determine which of the following numbers have a terminating decimal representation:-
(a) 73/40   (b) 216/625   (c) 56/2  (d) 42/245

(e) 142/7   (f) 92/130   (g) 86/214  (h) 69/317

3. Express each of the following numbers in decimal form:-
(a) 7/2  (b) 4/25  (c) 44/14   (d) 15/27

4. Simplify
(a)

(b)

(c)

(d)

(e)

(f)

(g)

5. Find the product of each of the following.
(a) 1/3 and 54.

(b) 1/3 and 60

(c) 9/8 and 72

(d) 62/23 and 230.

6. Divide the first number by the second number in each of the following cases.
(a) 4 1/2, 3/4

(b) -5/6, 25/42

(c) 2 2/3, 16/40

(d) 3, -4/5

(e) 0, 15/14

(f) 180/240, 1 30/60

7. Solve the following.

(a) 7(x-4) + 2(2x-5) - 3(x-5) = 7

(b) 4x - (2+4x) - 2(x-1) = -8(x-3)

(c)

(d)

(e)

8. A number is 7 times the other number. If their sum is 96, find the numbers.

9. The sum of three consecutive numbers is 99. Find the numbers.

10. A number consists of two digits whose sum is 9. If 45 is added to the number, the digits are reversed. Find the number.

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