CBSE Class 3 Mathematics Revision Worksheet Set O

CBSE Class 3 Mathematics Worksheet (8) - Revision

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Some important things to remember :-

a) There are 7 days in a week and 12 months in a year .
b ) A year completely divisible by 4 is called a leap year .
c) An ordinary year has 365 days .
d) A leap year has 366 days.
e) The year which is not a leap year is called an Ordinary year .
f) 10 years make a Decade .
g) 100 years make a Century .
h) There are 14 days in a fortnight .
i) There are 7 months in a year which have 31 days each .
j) There are 4 months in a year which have 30 days each .
k) ln Ordinary year February has 28 days .
l) ln leap year February has 29 days .

Q1) Write name of the month and days of the week in maths note book .

Q2) Which months in a year has 30 days each ? Write their names .

Q3) Which months in a year has 31 days each ? Write their names .

Q4) Name the first day of the week . Q5) Name the last day of the week .

Q1) Arrange in Columns and Add :
a) 6780 + 7130 + 45 + 301  b) 1018 + 506 +201 + 2
c) 2108 + 515 +200 + 9       d) 6111+ 446+ 102 + 6
e) 3011+ 146+ 192 + 4        f)  6210 + 202 + 35 +1
g) 7200 + 112 + 88+10        h) 3321 + 2102 + 305

Q1) Complete the following :-
a) ( 1854 + 113 ) + 4589 = ( 4589 + 113 ) + _______.
b) 2014 + ( 8462 + 1540 ) = ______ + ( 2014 + 8462 ) .
c) ( 8715 +_____ ) + 3214 = ( ______ + 1481 ) + 3214 .
d) 3826 +( 2900 +_______) = 3826 +( 7812 + _______ ) .
e) _______ + ( 1100 + 2546 ) = 5269 +(_______ + 1100 )
f) 6489 + _____ = 6489 . g) 9342 + 0 = ________ .
h) _______ + 5114 = 5114 .

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