# 22 Easy Maths Problems with Solutions

Question 1:

Solve: -2/3×3/5+5/2-3/5×1/6

2/3×3/5+5/2-3/5×1/6

=2/5+5/2-1/10

=(2*2+5*5-1)/10

=(4+25-1)/10

=28/10

=14/5

Question 2:

Solve the equation: 15/4 – 7x =9

15/4 – 7x =9

Or, (15 – 28x)/4 =9

Or, 15 – 28x=9*4

Or, 15 – 28x =36

Or, -28x=36-15

Or, -28x=21

Or, x=-21/28=-3/4

Question 3:

Two numbers are in the ratio 5:3. If they differ by 18, what are the numbers?

Let numbers are 5x and 3x respectively.

5x-3x=18

2x=18

X=18/2=9

Numbers are=5x, 3x=45, 27

Question 4:

Write 815642120 in words (in the International system).

815642120

= 815,642,120

= eight hundred fifteen million six hundred forty-two thousand one hundred twenty

Question 5:

Find x in 2x+5÷3=3x-10

2x+5÷3=3x-10

Or, 5÷3=3x-2x-10

Or, 5÷3=x-10

Or, 5÷3+10=x

Or, 5/3 + 10 =x

Or, x=(50+30)/30

Or, x=80/30

Or, x=8/3

Question 6:

What is the lowest term in 64/32?

64/32

=2/1

lowest term in 64/32=2/1

Question 7:

Are 4/6 and 8/12 equal ?

8/12

=4/6

So, 4/6 and 8/12 are equal.

Question 8:

One-fifth of a number is 9. Find the number

Let number=x

ATQ,

(1/5)x=9

Or, x/5=9

Or, x=9*5

Or, x=45

Question 9:

What should be added to 1/4 to get 4/9?

Let x should be the required number.

ATQ,

(1/4)+x=4/9

Or, (1+4x)/4=4/9

Or, (1+4x)=16/9

Or, 4x=16/9-1

Or, 4x=(16-9)/9

Or, 4x=7/9

Or, x=7/36

Question 10:

Fine the value of x when (5x-4) =0

(5x-4) =0

Or, 5x =4

Or, x=4/5

Question 11:

what number should be added to - 7/8 to get 4/9

let the required number is x.

According to the question,

- 7/8 + x = 4/9

x=4/9+7/9

=(4+7)/9

=11/9

Required number=11/9

Question 12:

what number should be added to -5/12 to get 7/6

let the required number is x.

According to the question,

-5/12 + x = 7/6

x=7/6+5/12

=(14+5)/12

=19/9

Required number=19/12

Question 13:

what should be subtracted from -4/9 to get 5/12

let the required number is x.

According to the question,

-4/9-x=5/12

Or, -x=5/12+4/9

Or, x=(15+12)/36

Or, -x=37/36

Or,x=-37/36

Required number=-37/36

Question 14:

what number should be added to -5/7 to get -7/9

let the required number is x.

According to the question,

-5/7+x=-7/9

Or, x=-7/9 + 5/7

Or, x=(-49+45)/63

Or, x=-4/63

Required number=-4/63

Question 15:

what number should be subtracted from -2/3 to get -1/6

let the required number is x.

According to the question,

-2/3-x=-1/6

Or, -x=-1/6+2/3

Or, -x=(-1+4)/6

Or, -x=3/6

Or, -x=1/2

Or, x=-1/2

Required number=-1/2

Question 16:

what number should be added to 3/8 to get 7/9

let the required number is x.

According to the question,

3/8+x=7/9

Or, x=7/9-3/8

Or, x=(56-27)/72

Or, x=29/72

Required number=29/72

Question 17:

what number should be added to 3 by 8 to get minus 1 by 24

or

what number should be added to 3/8 to get - 1/24

or

what should be added to 3/8 to get-1/24

let the required number is x.

According to the question,

3/8+x=1/24

Or, x=1/24-3/8

Or, x=(1-9)/24

Or, x=-8/24

Or, x=-1/3

Required number=29/72

Question 18:

simplify: 2/3 + -4/5 + 7/15 + -11/20

2/3 + -4/5 + 7/15 + -11/20

=2/3 - 4/5 + 7/15 - 11/20

=(40-48+28-22)/60

=-2/60

=-1/30

Question 19:

what rational number should be added to -5/11 to get -7/8

let the required number is x.

According to the question,

-5/11+x=-7/8

Or, x=-7/8+5/11

Or, x=(-56+40)/88

Or, x=-16/88

Or, x=-2/11

Required number=-2/11

Question 20:

which of the rational numbers 4/9, -5/6, -7/-12 and 11/-24 is the smallest?

4/9=0.4444444444……

-5/6=-0.833333333333………(smallest)

-7/-12=7/12=0.583333333333……..(greatest)

11/-24=-11/24=-0.4583333333333………

Question 21:

the product of two numbers is -20/9. if one of the numbers is 4, find the other.

Let other number=x

According to the question,

x * 4=-120/9

or, x=-30/9

or, x=-10/3

so, other number is 10/3.

Question 22:

which of the two rational numbers 5 / 7 or 3 / 5 is greater?

5/7=0.714285714

3/5=0.6

So, 5/7 is greater.