Exercise 2.2
1. Express the following rational numbers
into decimal and state the kind of decimal expansion
(i) 2/7 (ii) − 5 (3/11) (iii) 22/3 (iv)
327/200
2. Express 1/13 in decimal form. Find
the length of the period of decimals.
3. Express the rational number 1/33 in
recurring decimal form by using the recurring decimal expansion of 1/11. Hence write
71/33 in recurring decimal form.
4. Express the following decimal expression
into rational numbers.
5. Without actual division, find which
of the following rational numbers have terminating decimal expansion.
(i) 7/128 (ii) 21/15 (iii) 4 (9/35) (iv)
219/2200
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