Question

1. Find: 349 x 241.
2. Find: 7 878 +39.
3. Using division method, find the prime factorization of 250.
4. Find the LCM of 18 and 30 using the prime factorization method.
5. What smallest number should be subtracted from the number 13 456 to get a number
divisible by 10?
6. Find the HCF of 45, 40 and 60 using the prime factorization method.
7. Find the greatest number of 4 digits which is divisible by 35.
8. The sum of two numbers is 420 and one of them is 260. Find the product of the
two numbers.
9. What is the highest number that will divide 63, 35,77 leaving 7 as remainder in each case?
10. The product of two numbers is 192. If their HCF is 4, find their LCM.​

Answer 1

Answer:

a.84109

b7917

c. 250 = 5*5*5*2

d. 90

e. 6

f. 5

g, 9975

h. 41600

Step-by-step explanation: