if the angle is less than 90. Than it is called _______ angle:

subtract the sum of -40 and 80 from the sum of -30 and 60:

Find the value of the given expression :
2a + 3b -4c +5d
Where a=2 , b=3 , c=4 ,d =5

Marine spent 524 Rs for books, each book was of 65.5 Rs . Find the no of books she bought:

Find the difference between the place value of 6 in 116960:

Find the distance between two points A(10,8) and B(18,13)

Solve the equation :
11/5 + 12/5 + 31/5

Choose the best type of graph:

Rewrite (7.7.7.7 + 5.5.5 -3.3.3) in simplest form using exponents:

Sometimes if the power is not one, we have to be careful while adding that.

Solve the equation:
(11/5 + 12/5 )*20  + (20/3 + 10/3)*9

Find the value of x in the given equation:
(12x - 40 )*2 = 2x+ (4/2)

Point A and Point B are 60 m apart. Point B and Point C are 150 m apart. Ben ran from Point A to Point B in 3 seconds.
Then, he runs from Point B to Point C in 11 seconds. Find Ben’s average speed for the distance from Point A to Point C.

priya bought 2/3kg potato, 4/3 kg onion and 5/3kg tomato. She paid 50Rs per kg . Find the total amount she paid.

Find the least no. of students in a class such that they stand in rows of 15, 20, 25 and form a perfect square.

Find the 40 % of  640:

Which of the following is equivalent to 7/2: