Tinh hop ly
15 . 85 + 852
Tinh hop ly
a) ( 36-6).(-5)+31.(-7-13)
b) -39.(85-48)-85.(39-48)
c) 48.(-21)+(-142).(-24)
d) 59.(35-15)-59.(35+15)
Tinh hop ly
85.(35-27)-35.(85-27)
77-11.(30+7)
\(77-11\left(30+7\right)=77-11.30+11.7\)
\(=77-77-330=0-330\)
\(=-330\)
trả lời:
\(77-11.\left(30+7\right)\)
\(=77-11.30+11.7\)
\(=77-77-330\)
\(=0-330\)
\(=-330\)
học tốt
77-11.(30 + 7 )
= 77- 330 - 77
= 77 - 77 - 330
= 0 - 330
= -330
85.( 35 - 27 ) - 35.( 85 - 27 )
= 2975 - 2295 - 2975 + 945
= 2975 - 2975 -2295 + 945
= 0 - 2295 + 945
= -1350
15+15x2+15x7-100 Tinh hop ly
15 + 15 x 2 + 15 x 7 - 100
= ( 2 + 7 + 1 ) x 15
= 10 x 15
= 150
15 + 15x2 + 15x7 -100
= 15 x( 1+2+7 ) -100
= 15 x 10 -100
= 150-100
=50
15 + 15x2 + 15x7 - 100
= 15 x (1 + 2 + 7) - 100
= 15 x 10 - 100
= 150 - 100
= 50
tinh hop ly
47.(45-15)-47.(45+15)
47.(45-15)-47.(45+15)
= 47.( 45 - 15 - 45 + 15 )
= 47 . ( -30 )
= -1410
Trả lời
47.(45-15)-47.(45+15)
=47.45-47.15-47.45+47.15
=(47.45-47.45)+(47.15-47.15)
=0+0
=0
Học tốt nha !
47 . ( 45 - 15 ) - 47 . ( 45 + 15 )
= 47 . ( 45 - 15 - 45 - 15 )
= 47 . (-30)
= -1410
Học tốt !!!
=))
tinh hop li: 77-11(30+7)
85(35-27)-35(85-27)
47(45-15)-47(15+45)
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thuc hien phep tinh sau mot cach hop ly:
45-|-15|:3
45 - | -15 | : 3
= 45 - 15 : 3
= 45 - 5
= 40
\(45-|-15|\div3\)
\(=45-15\div3\)
\(=45-5\)
\(=40\)
tinh hop ly neu co the
1.12.22-6.20+3.32
2.(212.213-15:5+2018).(53.1414-14.5353)
tinh hop ly :
a, -79 . |-45| -21 |+45|
b , 29 . (23 + 15) - 23 . (29 + 15)
AI NHANH VA DUNG THI MK SE TICK CHO ^_^
a) -79.|-45| - 21.|+45|
= -79.45 - 21.45
= 45. (-79-21)
= 45. (-100)
= -4500
b) 29.(23+15) - 23.(29+15)
= 29.23 + 29.15 - 23.29 - 23.15
= (29.23 - 23.29) + (29.15 - 23.15)
= 0 + 15.(29-23)
= 15.6
= 90
tinh hop ly neu co the
a) 200 - 15 . 12 + 196 : 14
b) 4,6 . 63 + 25 . 0,53 + 4,6 . 37 + 0,27 . 25
a, 200-15 .12 +196 :14 =200-180+14=34
b,4,6.63+25.0,53+4,6.37 +0.27 .25=4,6.(63+37)+25.( 0,53 +0,27)=4,6.100+25.0,8=460+20=480
a) \(200-15.12+196:14=200-180+14\) \(=34\)
b) \(4,6.63+25.0,53+4,6.37+0,27.25\) \(=4,6.63+4,6.37+25.0,53+0,27.25\)
\(=4,6.\left(63+37\right)+25.\left(0,53+0,27\right)\)
\(=4,6.100+0,8.25\)
\(=460+20=480\)