Welcome to your 07 Math Free

1. 
After 12 years Rohit will be 3 times as old as he was 4 years ago. Find his present age.

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2. 
If the sum of two numbers is -12. If one of them is 18, find the other number?

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3. 
(- 59) × (- 99) + 59 is equal to:

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4. 
If the height of the triangle is decreased to 40% and base is increased by 40%. What is the effect on its area?

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5. 
A shopkeeper buys 10 eggs @ ₹ 8 and sells at 8 eggs @₹ 10. Find his gain or loss percent.

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6. 
The highest power of variable in linear equation is __________

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7. 
Which sign will come in the blank space? 6+3 x 11 ____________ (6+3) x 11

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8. 
Find the value of 15 × (–25) × (– 4) × (–10)

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9. 
Which of the following statements is not true?        

(a) When two positive integers are added, we always get a positive integer.
(b) When two negative integers are added, we always get a negative integer.
(c) When a positive integer and a negative integer are added, we always get a negative integer.
(d) Additive inverse of an integer 2 is (-2) and additive inverse of (-2) is 2.

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10. 
All decimal numbers are also rational numbers.

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11. 
If 2/5 of a number is 16, then the number is _____________

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12. 
A shopkeeper spends Rs. 2000 on buying stock. He sells the stock for Rs. 2800. What is his profit as a percentage of the amount he paid for the stock?

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13. 
The equation which cannot be solved as a integers

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14. 
Which of the following rational numbers is equal to its reciprocal?

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15. 
Four horses are tethered with equal ropes at 4 corners of a square field of side 84m, so that they just can reach one anther. Find the area left ungrazed by the horses

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16. 
If Aashana’s income is 20% more than that of Priya, then how many percent Priya’s income less than that of Aashana?

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17. 
A number is multiplied by 3 and 7 is taken away from the product to get answer 11.What is the number?

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18. 
A shirt priced at Rs. 535 is reduced by 30% in a sale. Find the sale price.

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19. 
4 squares each of the side 10 cm have been cut from each corner of a square sheet of paper of size 100 cm x 100 cm. From the remaining piece of paper, an isosceles right triangle is removed whose equal sides are each of 10 cm length. Find the area of the remaining part of the paper.

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20. 
A carpet of size 5 m x 2 m has 25 cm wide red border. The inner part of the carpet is blue in colour (see the figure). What is the ratio of areas of red portion to blue portion?

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