ThreeDimensional Shapes — Maths STD 6 — Question

In the following numbers, replace * by the smallest number to make it divisible by 3:
35 * 64

Write the following as decimals:
Five and four tenths.

Write 'T' for true and 'F' for false for the statements given below:
30, 40, 45, 60 are in proportion.

Test the divisibility of the following numbers by 4:
63712

Write (T) for true and (F) for false for the following statements:
The sum of two odd numbers is an odd number.

Find numbers between 1 and 100 having exactly three factors.

Replace * of the following by < or > so that the statement is true:
2 * 5

Write the following using number, literals and sings of basic operations. State what each letter represents:
The area of a rectangle is the product of its length and breadth.

Which of the following numbers have 15 as their factor?
15625