Play with MATH

Algebraic expression

100

Classify the given expressions as a monomial or a binomial or a trinomial: a) x² +3    b) xy

a) Binomial b) Monomial 

200

What are the numerical coefficient of x in the following expression ? 4xy + 3yz 

4

300

Subtract -5xy from xy

-4xy

400

Simplify: 12x + 24y – 6x – 1y – 8 + 1

6x + 23y -7

500

Find the value of the following expressions for x = 3, y = 2  (i) x + y        (ii) 6x – 2y       iii) 3xy

i) 5          ii) 14       iii) 18

Simple equation

100

Write the following statements in the form of equations: 12 added to 3a to get 25.

12 + 3a =25

200

Write the following statements in the form of equations: a is multiplied by – 6 and then 4 is added to the result to get 13.

-6a + 4 =13

300

Which is a solution of the equation y+13 = 25 ?

y + 13 = 25

y = 25 -13

y = 12

400

Convert the following equations in statement form:

(i) y – 7 = 8        (ii) p +1 = 20 

i) y= 15   ii) p = 19 

500

Raju's mother age is 50 years old. She is 8 years older than 3 times Raju's age. What is Raju's age?

3x + 8 =50 

3x = 50 -8

3x = 42

  x =  42/3 

  x =14

Area and Perimeter

100

Value of π 

3.14 or 22/7

200

Find the area of a circle whose side is 5 cm.

s x s = 5 x 5 = 25 sq.cm 

300

Find the area of a triangle of base 5m and height m .

Area of triangle = 1/2 x b x h

                       = 1/2 x 5 x 6

                        =1 x 5 x 3

                        = 15 sq.m

400

A parallelogram has a base of 7 cm and its area is  42 cm².Find the height of the parallelogram.

Area of a parallelogram = b x h sq.un

                          b x h  =   42

                          7 x h  = 42 

                                h  = 42 / 7 

                           height = 6 cm

500

Find the area and perimeter of a square whose side is 7 cm 

Area = 7 x7 = 49 sq.cm

Perimeter = 4 x 7 = 28 cm

Fractions and Decimals

100

The value of 1.026 x 1000 is ____________

1026

200

33.4 x 7

233.8

300

A car covers a distance of 73.4 km in one hour. How much distance will it cover in 10 hours?

73.4 x 10 = 734

400

1. Kavitha purchases 1.58 kg of tomato , 0.7  kg of onion, 3.4 kg of cabbage , 0.2 kg of potatoes, and 1.03 kg of bitter guard . Calculate the total weight of the items she bought. 

1.58 + 0.7 + 3.4 + 0.2 + 1.03 = 6.91

500

a) 1/ 6 x 12/4

b) 4/8 ÷ 6/3

a)1/2

b) 1

Integers

100

Additive inverse of 5 is ______

-5

200

i) Commutative law : a x b = ___________

ii) Associative law : ___________ = (a x b) x c

iii) Distributive law : a x (b + c) =_______________

i) b x a 

ii) a x (b x c) 

iii) (a x b) + (a x c) 

300

Find : 

a) -2 + 3 - 4

b) 2 - (-9) 

c) 6 + (-3) - 3

a) -3

b) 11

c) 6

400

Evaluate : a) 2 x (-3) x (-4)

b) (-6) x ( 0 ) x (-2) 

c) (-10) ÷ (-10)

d) (-20) ÷ (2)

a) 24

b) 0 

c) 1 

d) -10 

500

Verify a x (b + c) = (a x b) + (a x c) for the following value , a= -1 , b=2, c=3.

-5 = -5