673+736=
Trình bày bài sau: Tính bằng cách thuận tiện nhất: 736 x 18 + 736 + 81 x 736
Tính nhanh:
a) 2003*5+2003+2003*4
b) 736*625-254/624*736+482
Tính nhanh:
a) 2003*5+2003+2003*4
=2003x(5+1+4)
=2003x10
=20030
a) 2003x5+2003+2003x4
= 10015+2003+8012
= 20030
b) 736x625-254/624x736+482
= 460000-11684/39+482
= 459700.4103+482
= 460182.4103
109 + (327+673) =
109+ ( 327 + 673 )
109 + 1000
1109
109 + (327+673)=109+1000=1109
109 + ( 327 + 673 )
109 + 1000
1109
128 673 - x = 5050 : 5
\(128673-x=5050:5\\ 128673-x=1010\\ x=128673-1010\\ x=127663\)
128673-x=5050:5=1010
=>x=128673-1010=127663.
128 637 - x = 1010
x = 128 637 - 1010
x = 127 627
1000 - x : 52 = 673
1000 - x : 52 = 673
x :52 = 1000 - 673
x : 52 = 327
x = 327 x 52
x = 17004.
1000 - x : 52 = 673
=> x : 52 = 1000 - 673
=> x : 52 = 327
=> x = 327 x 52
=> x = 17004
8274-5437=
6815-6459=
5468-673=
\(\text{8274-5437=}2837\)
\(\text{6815-6459=}356\)
\(\text{5468-673=}4795\)
957+736=
957 + 736 = 1693
TL
=1693
nha bn
HT
736-81=
452-(-673+548-123)+(-327)
452 - (-673 + 548 - 123) + (-327)
= 452 + 248 - 327
= 700 - 327
= 373
452-(-673+548-123)+(-327)
=452+673-548+123-327
=373