1. Do as directed
(a) 27,42,93,717 + 6,28,05,178 + 8,85,324
(b)8,07,00,235 - 78,77,429
(c) 39567 X 6094
(d) 212588 ÷ 697
2. Find the LCM of
(a) 21 and 35
(b) 18 and 30
3. Find the HCF of
(a)18 and 27
(b)28 and 42
4.Find the prime factorisation of the following by factor tree method
(a) 75
(b) 108
5. Fill in the blanks
(a) A pair of twin primes between 10 and 20 is _________.
(b) 5th multiple of 5 + 8th multiple of 3= ___ multiple of 7.
(c)The remainder in 325729 ÷ 1000 is ________.
(d)203651 X ________= 20365100000
(e) Replace the ∆ by the smallest number so that 4237∆ may be divisible by 4 . ∆ = ____
Answers
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2
Answer:
Engineer's Day is observed in several countries on various dates of the year. As of 19 January 1996, the World Federation of Engineering Organizations has designated March 4th as 'World Engineering Day for a Sustainable World'.
Answered by
1
Answer:
1) a) 337,984,219
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