Math Editor

Mathematics

Class: IXth std test -1 Max.Mark:40

Time: 60 min Natural numbers

Instructions:

I) Answers all questions.

II) Use maths instrument where ever required.

I. Choose the correct answers : 1× 4=4

1. The example of rational number is

A) √2 B) π C) 0.5 D) 0.3333..

2. Simplify 81153​

A) 97​ B) 917​ C) 79​ D) 37​

3. Multiply 6√5 by 2√5

A) 45 B) 65 C) 40 D) 60

4. The identity is am.an=

A) am−n B) am+n C) anm​ D) amn

II. Answers the following questions: 1×4=4

5.What is rational numbers? Give example?

6. Every irrational numbers is a real number.(True/False)

7.Divide. 8√15 by 2√3

8. Rationalize the denominator of √21​.

III. Answers the following questions: 4×2=8

9. Find five rational number between 53​and 57​
10. Check weather 112​is terminating or non-terminating.
11. Simplify: (3+√3)(3−√3).
12. Compute : 6421​.

IV. Answers the following questions: 4×3=12

13. Express 0.47 in the form of qp​, where p

and qare the integers and q=0.

14. Locate √5 on the number line.
15. Compute the following

i. 3251​ ii. 721​.821​ iii. 1141​1121​​

16. Compute the value i. 1643​ ii. 12531​

V. Answers the following questions: 3×4=12

17. Find decimal of 71​ by using long division

and also find 72​, 73​ Without using long

division method ?

18. Represent √9.3 on the number line
19. Rationalized the denominator of i. √5+√21​ ii. 7−2√52​

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