Study Material for Kindergarten and Primary school students

Natural Numbers 1,2,3,4,........ are natural numbers. The counting numbers are natural numbers. 1 is the smallest natural number. Whole Numbers Natural numbers with 0 are called whole numbers. 0,1,2,3,4,......... are whole numbers. 0 is the smallest whole number. Even Numbers A number divisible by 2 is called an even number. 2,4,6,8,20,48,66,84, are some even numbers. Odd Numbers A number not divisible by 2 is called an odd number. 3,5,7,9,13,25,47,59 are some odd numbers. Prime Numbers A number which is not divisible by any number except by itself or by 1 is called a prime number. 2,3,5,7,11,13 are some prime numbers. Composite Numbers All numbers greater than 1 which are not prime numbers are called composite numbers. 4,6,8,9,10,12,49,81 are some composite numbers.

12 pieces                  =  1 dozen 12 dozen                  =  1 gross 20 pieces                  = 1 score 1 inch                        = 12.54 cm 12 inch                      = 1 foot 3 feet                         = 1 yard 1760 yards               = 1 mile

10 milliliters (ml )  =  1 centimetre 10 centimetres ( CL) = 1 decilitre 10 decilitres ( d)       = 1 litre 10 litres (l)                 = 1 decalitre 10 decalitre (dal)     = 1 hectolitre 10 hectolitres (hl)   = 1 kilolitre

365 days        =    1 year 30, 31 days    =   1 month 7 days             =   1 week 24 hours        =   1 day 60 minutes    =  1 hour 60 seconds     = 1 minute

He often bought oranges from an old lady. After they were weighed, paid for and put in his bag, he would always pick one from his bag, peel it, put a segment in his mouth, complain it's Sour and pass on the orange to the seller. The old lady would put one segment in her mouth and restore, " why, it's sweet, " but by then he was gone with his bag. His wife, always with him, asked, " the oranges are always sweet, then why this drama every time? " He smiled, " the old mother sells sweet oranges but never eats them herself. This way I get her to eat one, without losing her money. That's all. " The vegetable seller next to the old lady, saw this everyday. She chooses, " every time this man fusses over your oranges, and I see that you always weigh a few extra for him. Why? " The old lady smiled, " I know he does this to feed me an orange, only, he thinks I don't understand. I never weigh extra. His love tilts the sca...

10 milligrams ( mg) = 1centigram 10 centigrams (cg)   = 1 decigram 10 decigram ( dg)     = 1 gram 10 grams ( g)              = 1decagram 10 decagrams ( dag)= 1 hectogram 10 hectograms (hg) = 1 kilogram (kg) 1000 mg  = g 1000 g      = 1 kg 100 kg      = 1 quintals 10 quintals = 1 ton 

10 millimetres (mm) = 1 centimetre 10 centimetres (cm)  = 1 decimetre 10 decimetres (DM)  = 1 metre 10 metres (m)            = 1 decametre 10 decametres (dam) =1 hectometre 10 hectometres (hm)= 1killometre 1m = 10 dm= 100 cm = 1000 mm 1km =10hm = 100 dam = 1000n