Các câu hỏi tương tự
Tính nhanh:
a)136.68+16.272+100.64
b)341.67+341.16+659.83
c)140+136+132+...+64+60
d) (2+4+6+8+...+100).(36.333+108.111)
e)2.4+4.6+6.8+...+98.100
(2+4+6+...+100) . (36.333-108.111)
(2+4+6+.....+100).(36.333-108.111)
Tinh hợp lý
e,E= 19.64+76.34
f. F= 35.12 + 65.13
g, G= 136.68 + 16.272
Chú ý: . là nhân
Tính nhanh 2/2·4+2/4·6+2/6·8+.........+2/96·98+2/98·100
Giai giup minh bai toan nay dk ko bai tinh nhanh
a) (2465-275)-(465-375)
b)20152015.2016-20162016.2015
c)39.24-14/25+39.23
d)33.17+36/31.19+8
e)(2+4+6+...+100).(36333-108.111)
g)2003.14+1988+2001.2002/2002+2002.503+504.2002
2-1+4-3+6-5+.............+1000-999
1/2*4+1/4*6+.............+1/98*1000
5/2*4+5/4*6+...........+5/98*100
tinh 1/2*4+1/4*6+1/6*8+.......+1/96*98+1/98*100=
a)51/100 b)49/100 c)51/200 d)49/200
tính nhanh (2/3+3/4+5/6+...+99/100).(1/2+2/3+3/4+...+98/99)-(1/2+1/3+...+99/100).(2/3+2/4+...+98/99)