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Posted Date: 26 Sep 2009 Posted By: Rajeev Member Level: Diamond
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2007 CBSE School Level Courses Maths Rational Numbers Question paper
Question 1 ( 1 marks)
Are rational numbers closed under division? Give reasons in support of your answer.
Question 2 ( 1 marks)
Fill in the blanks:
(a) The reciprocal of the rational number is __________. ( mark)
(b) The rational number __________ has no multiplicative inverse. ( mark)
Question 3 ( 1 marks)
Is the multiplicative inverse of 0.71? Give reason in support of your answer.
Question 4 ( 1 marks)
Name the property under multiplication used in the expression
Question 5 ( 1 marks)
Using property of multiplication, find the value of the expression.
Question 6 ( 2 marks)
(a) Define a rational number. (1 mark)
(b) Are rational numbers closed under subtraction? Give reasons. (1 mark)
Question 7 ( 2 marks)
Find the additive inverse of the multiplicative inverse of the expression.
Question 8 ( 3 marks)
Find seven rational numbers between -1 and 1 and represent them on the number line.
Question 9 ( 3 marks)
(a) State distributive property of multiplication over addition and subtraction for rational numbers. (1 mark)
(b) Using the property under multiplication, simplify the expression. (2 marks)
Question 10 ( 6 marks)
(a) Find eight rational numbers between and . (2 marks)
(b) Find four rational numbers between and . (2 marks)
(c) How many rational numbers are there between 3 and 4? Write any two of them. (2 marks)
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