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P5 Mathematics

Question post on Sat, 14/10/2017 12:00pm

Any easy method? Thanks

Source: Tao Nan

Chen-Xi Physics · Answer 1 · Post on Mon, 06/11/2017 4:04pm

Chen-Xi Physics Post on Mon, 06/11/2017 4:04pm

(60+2)*30/2=930

qingni0000 · Answer 2 · Post on Fri, 03/11/2017 2:22pm

qingni0000 Post on Fri, 03/11/2017 2:22pm

1+2+3+…+30 = 31*15 = 465

2+4+6+…+60 = 465+465 = 930

ConceptualMaths · Answer 3 · Post on Sat, 14/10/2017 7:29pm

First 30 even numbers
2, 4, 6…………56, 58, 60

2+60=62
4+58=62
There will be 15 sets of 62,
Sum = 15×62=930

alfretztay · Answer 4 · Post on Sat, 14/10/2017 12:40pm

alfretztay Post on Sat, 14/10/2017 12:40pm

30 x 2 = 60 (30th)
(2 + 60) x (30/2) = 930

Ans : 930.