1245*334= 3636: 18
1245 x 334 - 3636 :18
giúp
1245 x 334 = 3636 :18 3576 + 8285 x 13
tính nhanh
475+666+334-1000
1245-238+755-572+45
(434+191)-(191-434)
472-186-172+986
475+(666+334)-100-=475+1000-1000=475
1245-238+755-572+45=(1245+755+45)-(238+572)=2045-810=1235
(434+191(-(191-434)=434+191-191+434=868
472-186-172+986=(472-172)+(986-186)=300+800=1100
475 + 666 + 334 - 1000
= 475 + ( 666 + 334 ) -1000
= 475 + 1000 + 1000
= 1475 - 1000
= 475
1245 - 238 + 755 - 572 + 45
= 1245 - ( 238 + 572 ) + ( 755 + 45 )
= 1245 - 810 - 800
= 1245 - 10
= 1235
( 434 + 191 ) - ( 191 - 434 )
= ( 434 - 434 ) - ( 191- 191 )
= 0 - 0
= 0
472 - 186 - 172 + 986
= ( 472 - 172 ) + ( 986 - 186 )
= 300 + 800
= 1100
Tính nhanh
2004*37+2004*2+2004*59+2004/334*321-201*334-334*102-18*334
Tính nhanh : 18/15 x { 2525/3636 + 1515/1818 - 2020/7272 }
18/15*35/36+18/15*15/18-18/15*20/72
5/6+1/1-1/3
5/6+6/6-2/6
3/2
18 : ( 1111/3636 +141414/727272 - 808/1818)
làm hộ nha
=18/\(\left(\dfrac{11}{36}+\dfrac{7}{36}-\dfrac{4}{9}\right)\)
\(=18\)\(\)/\(\dfrac{1}{18}=324\)
tính bằng cách thuận tiện nhất 1245 x 2 + 3 x 1245 + 1245 x 4 + 1245
1245 x 2 + 3 x 1245 + 1245 x 4 + 1245
= 1245 x 2 + 3 x 1245 + 1245 x 4 + 1245 x 1
= 1245 x (2 + 3 + 4 + 1)
= 1245 x 10
= 12450
18 : ( \(\dfrac{1111}{3636}\) +\(\dfrac{141414}{727272}\) - \(\dfrac{808}{1818}\))
làm hộ ik nha
\(18:\left(\dfrac{1111}{3636}+\dfrac{141414}{727272}-\dfrac{808}{1818}\right)\)
=18:\(\left(\dfrac{11}{36}+\dfrac{7}{36}-\dfrac{4}{9}\right)=18:\left(\dfrac{11+7-16}{36}\right)\)
=18:\(\dfrac{1}{18}\)
=324
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