Tính B = 423134 x 846267 - 423133
423133 x 846267 + 423134
423134 x 846267 - 423133 : 846267 x 423133 + 423134
so sánh:
423134 x 846267 - 423133
--------------------------------------------- và 1
846267 x 423133 = 423134
Thực hiện phép tính
( 2+4+6+8+98+100 ) × (36×333-108×111)
423134×846267-423133:846267×423133+423134
bài 5 tính nhanh
a, 1990 .1990 - 1992 . 1988
b, ( 1374 . 57 + 687 .86) : ( 870+235.122)
c, ( 124.237 +152 ) : ( 870+235.122)
d, 423134 . 846267 - 423133/ 846267 . 423133 + 423134
#Toán lớp 6a) 1990.1990 - 1992.1988
= 1990.1990 - (1990 + 2)(1990 - 2)
= 1990.1990 - 1990.1990 + 4 = 4
b) (1374.57 + 687.86) : (870 + 235.122)
= (1374.57 + 687.2.43) : (10.87 + 5.47.2.61)
= (1374.57 + 1374.43) : (10.87 + 10.47.61)
= [1374(57 + 43)] : [10(87 + 47.61)]
= (1374.100) : [10(87 + 47.61)] (đoạn này mẫu số xấu quá, hetcuu)
c) (124.237 + 152) : (870 + 235.122)
= (124.235 + 124.2 + 152) : (870 + 235.122)
= (122.235 + 2.235 + 2.124 + 152) : (870 + 235.122)
= (122.235 + 470 + 248 + 152) : (235.122 + 870)
= (122.235 + 870) : (235.122 + 870) = 1
d) \(\dfrac{423134\cdot846267-423133}{846267\cdot423133+423134}=\dfrac{423133\cdot846267+846267-423133}{846267\cdot423133+423134}\)
\(=\dfrac{423133\cdot846267+423134}{846267\cdot423133+423134}=1\)
ĐỀ BÀI: 423134 . 846267 - 423133 / 423133 . 846267 + 423134
Giúp mk nhé nhanh lên
423134*846267-423133/423133*846267+423134
=423134*846267-1*846267+423134
=423134*(846267-1*846267)
=423134*0
=0
a) 7256 * 4375 - 725 / 3650 + 4375 * 7255
b) 423134 * 846267 - 423133 / 423133 * 846267 + 423134
b) ( 7256 . 4375 - 725 ) : ( 3650 + 4375 . 7255 )
= ( 31745000 - 725 ) : ( 3650 + 31740625 )
= 31744275 : 31744275
=1
Thực hiện các phép tính sau:
a) (456*11+912) *37:(13*74)
b) (423134*846267-423133):(423133*846267+423133)
a, 1990 .1990 - 1992 . 1988
b, ( 1374 . 57 + 687 .86) : ( 870+235.122)
c, ( 124.237 +152 ) : ( 870+235.122)
d, 423134 . 846267 - 423133/ 846267 . 423133 + 423134
1.Tính nhanh: a.(124*237+152):(870+235*122)= b.423134*846267-423133/846267*423134+423134= Giúp mình nhanh nhé.Mình đang cần lắm.Ai xog mình tick ngay cho . Chú ý:* là giấu nhân / là phần