Welcome to your 07 Math

1. 
( – 43) × ( – 99) + 43 is equal to
2. 
A piece of string is 36 cm long. What will be the length of each side. If the string is used to form an equilateral triangle?
3. 
If Reena pays an interest of ₹1000 for 4 years on a sum of ₹ 2500, find the rate of interest per annum(p.a.)
4. 
In the standard form of a rational number, the denominator is always a
5. 
After 10 years Arpit will be three times as old as he was four years ago. What is his present age?
6. 
Price of a Scooty depreciates by ₹ 4300 for the first year and thereafter at rate of ₹ 1200 per year. If the original price of the scooty is ₹ 48000. Find the price of the Scooty after 7 years?
7. 
Which sign will come in the blank space? – 231 + 79 + 51 _________–399 + 159 + 81
8. 
Which of the following rational numbers is negative?
9. 
What is the area of the rhombus ABCD below, if AC = 12 cm and BE = 8 cm?
10. 
If the diagonal of a square is 40 m then its area will be :
11. 
Area of parallelogram ABCD is not equal to
12. 
A piece of string is 36 cm long. What will be the length of each side. If the string is used to form a square?
13. 
I spend 2/5 of my salary in rent and 3/10 on food. I give 1/5 of my salary to my younger brother Priyansh. How much part of the money I spend?
14. 
A rectangular park of length 70 m and breadth 50 m is there in a locality. Two crossroads perpendicular to each other of width 6 m needs to be constructed in between the park for walking. Find the area of Horizontal Road.
15. 
Which of these situations is about volume?
16. 
If m, n and p are integers, then according to the associative law of multiplication, (m × n) × p must be equal to:
17. 
One day the temperature in London is 18ºC and in Athens it is 80% higher. What is the temperature in Athens?
18. 
The per cent that represents the unshaded region in the figure.
19. 
A shirt priced at Rs. 535 is reduced by 30% in a sale. Find the sale price.
20. 
If k + 7 = 16, then the value of 8k – 72 is