Bài 3: Nhân, chia số hữu tỉ
Các câu hỏi tương tự
Tinh:
a) dfrac{7}{8}.left(dfrac{2}{12}+dfrac{4}{10}right)
b) dfrac{3}{2}-dfrac{5}{6}:left(dfrac{1}{2}right)^2+sqrt{4}
c) dfrac{15}{34}+dfrac{7}{21}+dfrac{19}{34}-1dfrac{15}{17}+dfrac{2}{3}
d) left(-2right)^3.left(dfrac{3}{4}-0,25right):left(2dfrac{1}{4}-1dfrac{1}{6}right)
e) 16dfrac{2}{7}:left(-dfrac{3}{5}right)+28dfrac{2}{7}:left(-dfrac{3}{5}right)
GIUP MK T ^ T
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Tinh:
a) \(\dfrac{7}{8}.\left(\dfrac{2}{12}+\dfrac{4}{10}\right)\)
b) \(\dfrac{3}{2}-\dfrac{5}{6}:\left(\dfrac{1}{2}\right)^2+\sqrt{4}\)
c) \(\dfrac{15}{34}+\dfrac{7}{21}+\dfrac{19}{34}-1\dfrac{15}{17}+\dfrac{2}{3}\)
d) \(\left(-2\right)^3.\left(\dfrac{3}{4}-0,25\right):\left(2\dfrac{1}{4}-1\dfrac{1}{6}\right)\)
e) \(16\dfrac{2}{7}:\left(-\dfrac{3}{5}\right)+28\dfrac{2}{7}:\left(-\dfrac{3}{5}\right)\)
GIUP MK T ^ T
Tính nhanh
a) 1/3. -4/5+ 1/3. -6/5
b) 3/7. 9/25- 1/14. 1/13
Tinh
a) left(-1,25right).14,7.left(-8right)
b)dfrac{3}{4}-1dfrac{1}{6}
c)dfrac{-3}{5}.51dfrac{11}{13}+dfrac{3}{5}.21dfrac{11}{13}
d)left|dfrac{-3}{4}right|.left|-dfrac{2}{3}right|
e)dfrac{-3}{5}+5dfrac{1}{13}-dfrac{2}{3}+1dfrac{3}{5}-dfrac{11}{33}
f)dfrac{3}{4}.sqrt{16}-10.sqrt{0,81}
g)left(dfrac{3}{4}right)^3:left(-dfrac{3}{8}right)^3
h)dfrac{6^4.15^3}{8.9^3.10^3}
GIUP MK T ^ T
Đọc tiếp
Tinh
a) \(\left(-1,25\right).14,7.\left(-8\right)\)
b)\(\dfrac{3}{4}-1\dfrac{1}{6}\)
c)\(\dfrac{-3}{5}.51\dfrac{11}{13}+\dfrac{3}{5}.21\dfrac{11}{13}\)
d)\(\left|\dfrac{-3}{4}\right|.\left|-\dfrac{2}{3}\right|\)
e)\(\dfrac{-3}{5}+5\dfrac{1}{13}-\dfrac{2}{3}+1\dfrac{3}{5}-\dfrac{11}{33}\)
f)\(\dfrac{3}{4}.\sqrt{16}-10.\sqrt{0,81}\)
g)\(\left(\dfrac{3}{4}\right)^3:\left(-\dfrac{3}{8}\right)^3\)
h)\(\dfrac{6^4.15^3}{8.9^3.10^3}\)
GIUP MK T ^ T
Tinh:
dfrac{-3}{5}.51dfrac{11}{13}+dfrac{3}{5}.21dfrac{11}{13}
left|dfrac{-3}{4}right|.left|-dfrac{2}{3}right|
dfrac{-3}{5}+5dfrac{1}{13}-dfrac{2}{3}+1dfrac{3}{5}-dfrac{11}{33}
dfrac{3}{4}.sqrt{16}-10.sqrt{0,81}
left(dfrac{3}{4}right)^3:left(-dfrac{3}{8}right)^3
dfrac{6^4.15^3}{8.9^3.10^3}
GIUP MK T ^ T
Đọc tiếp
Tinh:
\(\dfrac{-3}{5}.51\dfrac{11}{13}+\dfrac{3}{5}.21\dfrac{11}{13}\)
\(\left|\dfrac{-3}{4}\right|.\left|-\dfrac{2}{3}\right|\)
\(\dfrac{-3}{5}+5\dfrac{1}{13}-\dfrac{2}{3}+1\dfrac{3}{5}-\dfrac{11}{33}\)
\(\dfrac{3}{4}.\sqrt{16}-10.\sqrt{0,81}\)
\(\left(\dfrac{3}{4}\right)^3:\left(-\dfrac{3}{8}\right)^3\)
\(\dfrac{6^4.15^3}{8.9^3.10^3}\)
GIUP MK T ^ T
Bài 1 : Thực hiện phép tính
a) ( -1/2) - ( -3/5) + ( -1/9) + 1/71 - ( -2/7) + 4/35 - 7/18
b) ( 3 - 1/4 +2/3) - ( 5 - 1/3 - 6/5 ) - (6 - 7/4 +3/2 )
Bài 2 : Thực hiện phép tính
a) 2/3 - 4 . ( 1/2 +3/4 )
b) ( -1/3 +5/6) .11 -7
c) ( -5/9) . 3/11 + ( -13/18) . 3/11
d) ( -2/3) . 3/11 + ( -16/9) . 3/11
CÁC BẠN CỐ GẮNG HỘ MK NHA :(((
AI NHANH NHẤT HỨA TICK 3 3 3
TKS M.N TRƯỚC AK v
Đọc tiếp
Bài 1 : Thực hiện phép tính
a) ( -1/2) - ( -3/5) + ( -1/9) + 1/71 - ( -2/7) + 4/35 - 7/18
b) ( 3 - 1/4 +2/3) - ( 5 - 1/3 - 6/5 ) - (6 - 7/4 +3/2 )
Bài 2 : Thực hiện phép tính
a) 2/3 - 4 . ( 1/2 +3/4 )
b) ( -1/3 +5/6) .11 -7
c) ( -5/9) . 3/11 + ( -13/18) . 3/11
d) ( -2/3) . 3/11 + ( -16/9) . 3/11
CÁC BẠN CỐ GẮNG HỘ MK NHA :(((
AI NHANH NHẤT HỨA TICK <3 <3 <3
TKS M.N TRƯỚC AK =v=
tìm x, biết
1. -11/2x + 1= 1/3x - 1/4
2. 2x- 2/3 - 7x = 3/2 - 1
3. 3/2x - 2/5 = 1/3x - 1/4
4. 2/3 - 5/3x= 7/10x + 5/6
5. 2x -1/4 = 5/6 - 1/2x
6. 3x - 5/3 = x - 1/4
7. - 5/6 + 3x = 2/3 - 1/2x
8. 1/2 ( x + 2 ) - 4( x - 1/4 ) = 1/2x
9. 5/2( x - 3/5 ) - 1/10 = x-3
10. -4/3( x - 1/4 ) = 3/2( 2x - 1 )
Giúp mk với !!!
Tinh:
a) \(\dfrac{15}{24}+\dfrac{7}{21}+\dfrac{19}{34}-1\dfrac{15}{17}+\dfrac{2}{3}\)
b) \(\left(-2\right)^3.\left(\dfrac{3}{4}-0,25\right):\left(2\dfrac{1}{4}-1\dfrac{1}{6}\right)\)
c) \(16\dfrac{2}{7}:\left(-\dfrac{3}{5}\right)+28\dfrac{2}{7}:\left(-\dfrac{3}{5}\right)\)
tính nhanh
a) -5/12+4/37+17/12-41/37
b) 1/2+-3/5:(-1/1/2)-|-2/5|
c)8^15 x 3^16/4^22 x 9^8
d)35/1/6:(-4/5)-45/1/6:(-4/5)
e) (5/12:10/3)+(1/2)^2
1) -4\7 - 11\19 + 13\19 . -3\7 + 2\19 : -7\4
2) ( -4\9 + 3\5 ) : 1\1\5 + ( 1\5 - 5\9) : 1\1\5
3) 4\5 - ( -2\7) -7\10
4)2\7 - ( -13\15 + 4\9) - ( 5\9 - 2\15 )