C lass 7 Chapter 1 Assignment

 

Assignment of chapter 1

Q1. Find  the factors of the following

a)   90                                  b) 68

Q2. Find the LCM of 12 and 16

Q3. Find the fourth multiple of 46.

Q4. Find the squares of the following:

a)   12              b) 45                   c) 34

Q5. Find the square root of the following:

a)   36              b) 64                   c) 400                 d) 144

Q6. The difference between two square no. is 39. What are the two square numbers?

Q7. Write the square number which lies between 101 and 150.

Q8. Write all the prime numbers  between 20  to 40.

Q9. Write 25 as the sum of three different prime numbers.

Q10. Which integer is neither positive nor negative?

Q11. Temperature at the foot of the mountain is 100C. It fell down by 15°C at the top of the mountain. What is the temperature at the top of the mountain?

Q12. Fill in the blanks with >, < or = sign.
(a) (− 1) + (− 3) _____ (− 1) − (− 3)
(b) (− 25) + (− 10) _____ (− 25) - (− 11)
(c) 256 − (− 11) _____ 260 + (− 4)
(d) (− 25) + (− 42) _____ (− 42) − (−25)

 

Q13. Find the two square numbers that add up to

a) 169

b) 100