This document discusses rational numbers and their decimal forms. It explains that rational numbers can have either a terminating decimal form or a non-terminating decimal form. A terminating decimal form occurs when the remainder of dividing the numerator by the denominator is zero, resulting in a decimal that ends. A non-terminating decimal form has a single digit or group of digits that repeats after the decimal point and never ends. The document also prompts an activity question about determining if a decimal form is terminating based on the denominator.

1. Operation on Rational
Number
STD 7
Ch5
MANJIRI SAWANT
48

2. Decimal form of
Rational Number

3. Divide

4. Textbook Problems

5. Multiple

7. Terminating decimal form

8. We have obtained zero as the remainder. This type of Decimal form of
rational numbers is called the terminating decimal form or Non
recurring form.

9. Non Terminating Decimal form

10. Division does not come to and end here Single digit or a group of digits occurs
repeatedly on the right of the decimal point this type of decimal form is called
NON TERMINATING OR RECURRING DECIMAL FORM.
★ Single digit occurs repeatedly - use point above
★ Group of digit occurs repeatedly -use horizontal line

14. Activity
Without using division, can we tell from the denominator of a fraction, whether
the decimal form of the fraction will be a terminating decimal ? Find out.
● Fraction whose denominator include 2 and 5 as a factors

15. Homework