Number System — Maths STD 6 — Question

Estimate the following by rounding off factor to nearest hundreds:
875 - 384

State true (T) of false (F):
The product of primes cannot be a prime.

In the pairs given below, find the larger integer.
-385, -615

Write the corresponding Hindu-Arabic numerical for the following:
CLXXII

Fill in the blanks to make the following statement true:
A cuboid has _____ vertices.

Write the following using numbers, literals and signs of basic operations:
2 less than the quotient of x by y.

Express the following numbers as the sum of twin primes:120

Write the following using number, literals and sings of basic operations. State what each letter represents:
The total amount equals the sum of the principal and the interest.

Which of the following statements are true?
If a number is divisible by 8, it must be divisible by 4.