Number System — Maths STD 6 — Question

Perform the following subtractions and check your results by performing corresponding addition:
200000 - 97531

Write 'T' for true and 'F' for false statement.
Every prime numbner is odd.

Can a triangular number also be a square number?

State whether the following statement is true or false:
An isosceles triangle with more than one line of symmetry must be an equilateral triangle.

Indicate the following using ‘+’ or ‘-‘ sign:
2km above sea level

Estimate sum to the nearest ten:
(77 + 63)

Look at the angles shown in the pictures below. Identify the type of angle and write its name below the picture:

Write the following decimals in words:
0.459

Express the following odd numbers as the sum of three odd prime numbers:
35

Which of the following are like decimals:
8.80, 17.08, 8.94, 0.27