Câu 1:(372-19.4+(981:9-13)
Câu 2:456:2x18+456:3-102
(372-19x4)+(981:9-13)
456:2x18+456:3-102
( 372-19x4)+(981:9-13)
= ( 372-76)+(109-13)
= 296+96
= 392
456:2x18+456:3-102
= 4104 + 456:3-102
= 4104 + 152-102
= 3850
Tính nhanh
58.42+32.8+5.16
(42.43+43.57+43)-360:4
(372-19.4)+(981:9-13)
456:2.18+456:3-102
a) (42 x 43 + 43 x 57 + 43) - 360 : 4
= 43 x ( 42 x 57) + 43 - 360 :4
= 43 x 99 + 43 - 90
= 4257 + 43 - 90
= 4300 - 90
= 4210
b) (372 - 194 x 4) + (981 : 9 - 13)
= (372 - 776) + (109 - 13)
= -404 + 96
= -308
c) 456 : 2 x 18 + 456 : 3 - 102
= 228 x 18 + 152 - 102
= 4104 + 152 - 102
= 4256 - 102
= 4154
tính nhanh
a, (372 - 19. 4)+ (981 : 9 - 13)
b, 456 : 2 x18 + 456 : 3 - 102
a, ( 372 - 19 . 4 ) + ( 981 : 9 - 13 )
=( 93 . 4 - 19 . 4 ) + ( 109 - 13 )
= 4 . ( 93 - 19 ) + 96
= 4 . 74 + 4 . 24
= 4 . ( 74 + 24 )
= 4 . 98
= 392
( 42 x 43 + 43 x 57 + 43 ) - 360 : 4
(372 - 19 x 4 + ( 981 : 9 - 13 )
456 : 2 x 18 + 456 : 3 - 102
phép tính này có quy tắc :
nhân chia trước, cộng trừ sau.
trong ngoặc trc ngoài ngoặc sau
tíc mình nha
(42 x 43 + 43 x 57 + 43) - 360 : 4
= 4426549 - 360 : 4
= 4426549 - 90
= 4426459
(372 - 19 x 4 + (981 : 9 - 13)
= 296 + 96
= 392
456 : 2 x 18 + 456 : 3 - 102
= 4104 + 50
= 4154
>_< học tốt
(42*43+43*57+43)-360:4
=42*43+43*57+43*1 -360:4
= 43*(42+57+1)-360:9
=43*100-90
Tính nhanh
a) ( 42 x 43 + 43 x 57 + 43 ) - 360 : 4
b) ( 372 - 19 x 4 ) + ( 981 : 9 - 13 )
c) 456 : 2 x 18 + 456 : 3 - 102
a) \(\left(42\times43+43\times57+43\right)-360:4\)
\(=43\times\left(42+57+1\right)-90\)
\(=43\times100-90\)
\(=4300-90\)
\(=4210\)
b) \(\left(372-19\times4\right)+\left(981:9-13\right)\)
\(=\left(4\times93-19\times4\right)+\left(109-13\right)\)
\(=4\times\left(93-19\right)+109-13\)
\(=4\times74+109-13\)
\(=296+109-13\)
\(=392\)
c) \(456:2\times18+456:3-102\)
\(=456\times\frac{1}{2}\times18+456\times\frac{1}{3}-102\)
\(=456\times\left(\frac{1}{2}\times18+\frac{1}{3}\right)-102\)
\(=456\times\left(9+\frac{1}{3}\right)-102\)
\(=456\times\frac{28}{3}-102\)
\(=4256-102\)
\(=4154\)
ko bk tính nhanh!
a)( 42 x 43 + 57+43 ) - 360 :4 b) (372 - 19 x 4 ) + ( 981 : 9 - 13 )
= 43 x (42 + 57 +1 ) - 90 = (372 - 76 ) + ( 109 - 13)
= 43 x 100 - 90 = 296 + 96
= 4300 - 90 = 392
= 4210
Tính nhanh
a) 58*42+32*8+5*16.
b) ( 42*43+43*57+43) - 360:4
c ) ( 372 -19 *4 +(981:9- 13)
d) 456:2*18+456:3-102
bài 1:Tính nhanh
a,64*25+35*25+25
b,58*42+32*8+5*16
c,(42*43+43*57+43)-360/4
d,(372-19*4)+(981/9-13)
e,456/2*8+456/3-102
a)2500
b)2772
c)1974
d)347
e)1874
k mk nha
Tính nhanh:
a) (42.43+43.57+43)-360:4
b) (372 -194 .4 ) + ( 981 : 9 - 13 )
c) 456 : 2 . 18 + 456 : 3 - 102
Dấu chấm là nhân nhé !
Các bạn ơi giúp mình với mình đang cần gấp !
a) (42 x 43 + 43 x 57 + 43) - 360 : 4
= 43 x ( 42 x 57) + 43 - 360 :4
= 43 x 99 + 43 - 90
= 4257 + 43 - 90
= 4300 - 90
= 4210
b) (372 - 194 x 4) + (981 : 9 - 13)
= (372 - 776) + (109 - 13)
= -404 + 96
= -308
c) 456 : 2 x 18 + 456 : 3 - 102
= 228 x 18 + 152 - 102
= 4104 + 152 - 102
= 4256 - 102
= 4154
=
a) (42.43+43.57+43)-360:4
=4300 - (360:4)
=4300- 90
=4210
b) (372 -194 .4 ) + ( 981 : 9 - 13 )
=712 + 69
=808
c) 456 : 2 . 18 + 456 : 3 - 102
= (456 : 2 . 18) + (456 : 3 - 102)
=4104+50
=4155
k nhak
Tính nhanh :
a , ( 42 x 43 + 43 x 57 + 43 ) - 360 : 4
b , 372 - 19 x 4 - 981 : 9 - 13
c , 456 : 2 x 18 - 456 : 3 - 102
Ai trả lời đúng , đầy đủ thì mk tk cho 4 tk !
= [43 x ( 42 + 57 + 1)] - 90
= (43 x 100) -90
= 4300 - 90
= 4210
a,( 42 x 43 + 43 x 57 + 43 ) - 360 : 4
= [ 43 x ( 42 + 57 + 1 ) ] - 90
= [ 43 x 100 ] - 90
= 4300 - 90
= 4210
b, 372 - 19 x 4 - 981 : 9 - 13
= 372 - 76 - 109 - 13
= 174
c, 452 : 2 x 18 - 456 : 3 - 102
= 226 x 18 - 152 - 102
= 4068 - 152 - 102
= 3814
a. ( 42 x 43 + 43 x 57 + 43 ) - 360 : 4 b. 372 - 19 x 4 - 981 : 9 - 13
= ( 42 x 43 + 43 x 57 + 43 x 1 ) - 360 : 4 = 372 - 76 - 109 - 13
= ( 43 x ( 42 + 57 + 1 ) ) - 360 : 4 = 296 - 109 - 13
= ( 43 x 100 ) - 360 : 4 = 187 - 13
= 4300 - 360 : 4 = 174
= 4300 - 90
= 4210
c. 456 : 2 x 18 - 456 : 3 - 102
= 228 x 18 - 152 - 102
= 4104 - 152 - 102
= 3952 - 102
= 3850