ICSE ICSE Class 6 - CISCE Question Bank Solutions for Mathematics

State true or false:
If a and b are any two whole numbers, then a + b = b + a

State true or false:
Addition of whole numbers is associative

State true or false:
10 + 12 + 16 = (10 + 12) + 16 = 10 + (12 + 16)

Consider two whole numbers a and b such that a is greater than b.
(i) Is a – b a whole number ? Is this result always true ?
(ii) b-a a whole number ? Is this result always true ?

Fill in the blanks :
 8 – 0 = ______ and 0 – 8 = _____ 8 – 0 ≠ 0 – 8, this shows subtraction of whole numbers is not _______

Fill in the blanks :
5 – 10 = _____, which is not a _____
=> Subtraction of ______ is not closed.

Fill in the blanks :
7 – 18 = ______ and (7 – 18) – 5 = ______
18 – 5 = ________ and (7 – 18) – 5 = __________
Is (7 – 18) – 5 = 7 – (18 – 5) ?
=> Subtraction of whose numbers is not ______

Write the inverse, if possible for subtraction of whole numbers ?

Fill in the blank :
42 x 0 =_____

Find the product of the :
Greatest number of three digits and smallest number of five digits.

Find the product of the :
Greatest number of four digits and the greatest number of three digits

Fill in the blank:
(437 + 3) x (400 – 3) = 397 x _______

Fill in the blanks:
66 + 44 + 22 = 11 x ( ______ ) = 11 x _______

Evaluate :
355 x 18

Evaluate :
6214 x 12

Evaluate :
15 x 49372

Evaluate :
9999 x 8

Show that division of whole numbers is not closed
give an example of the above.

Show that any whole number divided by 1, always gives the number itself.
give an example of the above.

Show that every non-zero whole number divided by itself gives 1 (one).
give an example of the above.