(2,07 - 7,005) - (12,005 - 4,23)
(2,07+3,005)-(12,005-4,23)
(2,07+3,005)-(12,005-4,23)
=>2,07+3,005-12,005+4,23
=>(2,07+4,23)-(12,005+3,005)
=>6,3-15,01=-8,71
a) 60,7 + 25,5 - 38,7
b) (-9,207) + 3,8 + (-1,5030) - 2,8
c) (-12,5) + 17,55 + (-3,5) - (-2,45)
d) 2,07 + (-7,36) - (-8,97) + 1,03 - 7,64
e) (2,07 + 3,005) - (12,005 - 4,23)
f) 4,35- (2,67 - 1,65) + (3,54 - 6,33
a) 60,7 + 25,5 - 38,7=46,8
b) (-9,207) + 3,8 + (-1,5030) - 2,8=-9,71
c) (-12,5) + 17,55 + (-3,5) - (-2,45)=4
d) 2,07 + (-7,36) - (-8,97) + 1,03 - 7,6=-2,89
e) (2,07 + 3,005) - (12,005 - 4,23)=-2,7
f) 4,35- (2,67 - 1,65) + (3,54 - 6,33)=0,54
a) 60,7 + 25,5 - 38,7=46,8
b) (-9,207) + 3,8 + (-1,5030) - 2,8=-9,71
c) (-12,5) + 17,55 + (-3,5) - (-2,45)=4
d) 2,07 + (-7,36) - (-8,97) + 1,03 - 7,6=-2,89
e) (2,07 + 3,005) - (12,005 - 4,23)=-2,7
f) 4,35- (2,67 - 1,65) + (3,54 - 6,33)=0,54
Bài 2
a) 60,7 +25,5 - 38,7 b) -9,207 + 3,8 +(-1,505) - 2,8
c) (2,07 +3,005) - (12,005 - 4,23) d) -882: 124,35 - (-882) : 24,35
e) 3,58. 24,45 +3,58. 75, 55 f) 3,4.(-23,68) - 3,4 . 45,12+(-31,2) .3,4
a: =22+25,5=47,5
b: =-9,207-1,505+3,8-2,8=1-10,712=-9,712
c: \(=2,07+3,005-12,005+4,23=6,3-9=-2,7\)
e: =3,58(24,45+75,55)=3,58*100=358
Bài 2: Thực hiện phép tính (Tính hợp lí nếu có thể)
a) 60,7+25,5-38,7 b) (-9,207)+3,8+(-1,5030)-28
c) (-12,5)+17,55+(-3,5)-(-2,45) d) 2,07+(-7,36)-(-8,97)+1,03-7,64
e) (2,07+3,005)-(12,005-4,23) f) 4,35-(2,67-1,65)+(3,54-6,33)
g) (-0,4).(-0,5).(0,8) h) (-1,6).(-0,125).(-0,5) i) 3,58.24,45+3,58.75,55
giúp mình với
a: =22+25,5=47,5
b: \(=-9.207-1.503+3,8-28=-10,71-28+3,8\)
=-34,91
c: =-12,5-3,5+17,55+2,45
=20-16=4
d: =2,07+1,03-7,36-7,64+8,97=3,1-15+8,97=-2,93
e: =2,07+4,23+3,005-12,005
=6,3-9=-2,7
f: \(=4,35-2,67+1,65+3,54-6,33=6-9+3,54=3,54-3=0,54\)
(3,07+7,005)-(23,005-5,23)
đáp án là -7,7 nha bạn
CHÚC BẠN HỌC TỐT
Đặt tính rồi tính
b) 7,005 +3,487 + 6,5
Cho cac so thap phan :12,05;12,050;12,005;12,0500;12,0005.Nhung so thap phan bang nhau la:
A)12,05=12,050=12,005 C)12,05=12,050=12,0500
B)12,005=12,0005 D)12,05=12,005=12,0500=12,0005
Cho cac so thap phan :12,05;12,050;12,005;12,0500;12,0005.Nhung so thap phan bang nhau la:
A)12,05=12,050=12,005 C)12,05=12,050=12,0500
B)12,005=12,0005 D)12,05=12,005=12,0500=12,0005