# CBSE Class 10 Maths Revision Worksheet (All Chapters)

Fill in the blanks with suitable words.

1. HCF of any two primes numbers is always __________.

2. LCM of Smallest prime number and the smallest composite number is _______.

3. A _________ is a polynomial of degree 0.

4. We get the original polynomial if we multiply its ________ together.

5. If we draw x = a and y = b graphically then we get lines intersecting at _________.

6. If a pair of linear equations is consistent, then the lines will be __________.

7. If the equation is x² + x - 5 = 0, then product of its roots is _________.

8. If Discriminant i.e. D is positive, then the roots are _______ and _______.

9. The sum of AP 1 + 2 + 3 + ... + 10 is _________.

10. The nth term of the A.P.  a, 3a, 5a, ... is ________.

11. If the co-ordinates of the points A, B, C and D are such that AB = BC = CD = DA and AC = BD, then quadrilateral ABCD is a _________.

12. The centroid of a triangle divides each median in the ratio ________.

13. ____________ theorem states that if'a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, the other two sides are divided in the same ratio.

14. ____________ theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides

15. Only  _________ tangents can be drawn to a circle from an external point.

16. To divide a line segment in the ratio 4 : 3, it is divided into __________ parts.

17. Sum of ________ of sine and cosine of an angle is one.

18. cot θ is not defined for ∠ =

19. As the observer moves towards the object the angle of elevation __________.

20. If the height and length of the shadow of a man are the same, then the angle of elevation of the sun is ______.

21. __________ is the region between the arc and the two radii.

22. In a clock, the minute hand rotates through an angle of ________ in one minute.

23. From a point P, lying on the circle, ____________ tangent can be drawn to it

24. Tangent to a circle at a point is __________ to the radius through the point of contact.

25. Three cubes each of side 15 cm are joined end to end. The total surface area of the cuboid is ________

26. ________ is measured in cubic units.

27. ________ is the mid-value of class interval.

28. Mode of observations 4, 3, 1, 2, 3, 4, 4 is __________ .

29. The probability of an event that cannot happen is ________. Such an event is called ________

30. A single letter is selected at random from the word 'Probability'. What is the probability it is a vowel _________.

1: 1

2:  4

3: constant

4: factors

5: (a,b)

6: intersecting or coincident

7: -5

8: real, unequal

9: 55

10: a(2n -1)

11. square

12. 2:1 or 1:2

13. Basic Proportionality or Thales

14. Pythagoras

15. two

16. 7

17. square

18. 0°

19. increases.

20. 45°

21. sector

22. 6°

23. one and only one

24. perpendicular

25. 3150 cm²

26. Volume

27. Class mark

28. 4

29. 0, impossible event

30. 4/11  