18/37+8/24+19/37
=(18/37+19/37)+8/24
=1+1//3
=4/3
18/37 +8/24+19/37 -1
=(18/37+19/37)+8/24-1
=1+8/24-1
=(1-1)+8/24
=0+8/24
=8/24
b) 23/24+3/8
=23/24+(3x3/8x3)
=23/24+9/24
=4/3
18/37+8/24+19/37
=(18/37+19/37)+8/24
=1+1//3
=4/3
18/37 +8/24+19/37 -1
=(18/37+19/37)+8/24-1
=1+8/24-1
=(1-1)+8/24
=0+8/24
=8/24
b) 23/24+3/8
=23/24+(3x3/8x3)
=23/24+9/24
=4/3
tính hợp lí
\(\dfrac{18}{37}+\dfrac{8}{24}+\dfrac{19}{37}-1\dfrac{23}{24}+\dfrac{2}{3}\)
\(\frac{18}{37}+\frac{8}{24}+\frac{19}{37}-1\frac{23}{24}+\frac{2}{3}\)
(( MN ƠI GIÚP MIK nha ))
(( MIK ĐANG CẦN LẮM ))
Tính giá trị biểu thức:
\(e,\dfrac{18}{37}+\dfrac{8}{24}+\dfrac{19}{37}-1\dfrac{23}{24}+\dfrac{2}{3}\)
\(f,\left(-2\right)^3.\left(\dfrac{3}{4}-0,25\right):\left(2\dfrac{1}{4}-1\dfrac{1}{6}\right)\)
\(g,\left(\dfrac{2}{5}\right)^2+5\dfrac{1}{2}.\left(4,5-2\right)+\dfrac{2^3}{\left(-4\right)}\)
\(h,\dfrac{4}{9}.19\dfrac{1}{3}-\dfrac{4}{9}.39\dfrac{1}{3}\)
\(i,\left(-\dfrac{1}{2}\right)^2:\dfrac{1}{4}-2\left(-\dfrac{1}{2}\right)^2\)
\(j,125\%.\left(\dfrac{-1}{2}\right)^2:\left(1\dfrac{5}{16}-1,5\right)+2008^0\)
\(k,\left(-2\right)^3.\dfrac{-1}{24}+\left(\dfrac{4}{3}-1\dfrac{5}{6}\right):\dfrac{5}{12}\)
thực hiện phép tính
\(\frac{18}{37}\) +\(\frac{8}{24}\) +\(\frac{19}{37}\) - 1\(\frac{23}{24}\) +\(\frac{2}{3}\)
\(\frac{9+\frac{9}{11}+\frac{18}{23}-\frac{27}{37}}{8+\frac{8}{11}+\frac{16}{23}-\frac{24}{37}}-\frac{2+\frac{16}{29}-\frac{24}{13}-\frac{32}{11}}{3+\frac{24}{29}-\frac{36}{13}-\frac{48}{11}}\)
Thuc hien phep tinh
bài 1:
a) 3/4 + -1/6
b)2/9 - 7/24
c)-8/15 . 9/56
d)-14/27 : -49/54
bài 2:
a)5/6 + x=-4/9
b)-8/15 - -1/6 . x=3/10
bài 3: tính bằng cách hợp lí
A= 11/19 . -24/37 - 14/19 . 11/37
a) 2345 – 1000 : [19 – 2(21 – 18)2] b) 128 – [68 + 8(37 – 35)2] : 4 c) 568 – {5[143 – (4 – 1)2] + 10} : 10 d) 107 – {38 + [7.32 – 24 : 6+(9 – 7)3]}:15 e) 307 – [(180 – 160) : 22 + 9] : 2 f) 205 – [1200 – (42 – 2.3)3] : 40 g) 177 :[2.(42 – 9) + 32(15 – 10)] h) [(25 – 22.3) + (32.4 + 16)]: 5 i) 125(28 + 72) – 25(32.4 + 64) j) 500 – {5[409 – (23.3 – 21)2] + 103} : 15 |
Viết số mũ giùm mình ạ!
A/125.(-24)+24.225
B/(-8).17+(-8).83
C/-12.|X-3|=-24
D/3X-19=2X-7
E/X2 -37=-1
F/|X-8|=0
LÀM HẾT CHO 10 TICK NHA
Bài 1: Tính hợp lý nếu có thể :
k)( -37 ) + 14 + 26 + 37
l)15 + 23 + ( -25 ) + ( -23 )
n)25 + 37 - 48 - 25 - 37
o)24 × (16 - 5) - 16 × (24 - 5)
p)31 × (-18) + 31 × (-81) - 31
q)-48 + 48 × (-78) + 48 × (-21)
r) (7 × 3 - 3) ÷ (-6)
s)-3 × 7 - 4 × (-5) + 1
t)(6 × 8 - 10 ÷ 5) + 3 × (-7)