B=1/2+3/10+4/45+11/180+1/20
Những câu hỏi liên quan
tinh nhanh
a,A=100+98+96+...+2-97-95-...-1
b,B=1+2-3-4+5+6-7-8+9+10-11-12+...-229-330+301+302
c,C=41*66+34*41/3+7+11+...+79
d,D=1+2+3+...+200/6+8+10+...+34
e,E=1*5*6+2*10*12+20*24*4+9*45*54/1*3*5+2*6*10+4*12*20+9*27*45
Lấy kết quả×0+123
Lấy kết quả ×0+12345678910
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4
`4/7+4`
`=4/7+4/1`
`=4/7+28/7`
`=32/7`
__
`3+6/11`
`=33/11+6/11`
`=39/11`
__
`3-5/7`
`=3/1-5/7`
`=21/7-5/7`
`=16/7`
__
`21/9-2`
`=21/9-18/9`
`=3/9`
`=1/3`
__
`15/24+2`
`=15/24+48/24`
`=63/24`
`=21/16`
__
`63/45-20/25`
`=63/45-4/5`
`=63/45-36/45`
`=27/45`
`=9/15`
__
`3/4-2/8`
`=3/4-1/4`
`=2/4`
__
`6/7-5/8`
`=48/56-35/56`
`=13/56`
__
`37/45-5/9`
`=37/45-25/45`
`=12/45`
`=4/15`
__
`46/39-11/13`
`=46/39-33/39`
`=13/39`
`=1/2`
__
`5/12+3/4+1/3`
`=5/12+9/12+4/12`
`=14/12+4/12`
`=18/12`
`=3/2`
__
`1/2+3/7+11/14`
`=7/14+6/14+11/14`
`=13/14+11/14`
`=24/14`
`=12/7`
__
`7/10-(1/5+1/4)`
`=7/10-(4/20+5/20)`
`=7/10-9/20`
`=14/20-9/20`
`=5/20`
`=1/4`
__
`15/4-2/3-3/4`
`=(15/4-3/4)-2/3`
`=12/4-2/3`
`=3-2/3`
`=9/3-2/3`
`=7/3`
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Tính nhanh:
a/ (1*5*6+2*10*12+4*20*24+9*45*54)/(1*3*5+2*6*10+4*12*20+9*27*45)
b/ [(1*5*6)+(2*10*12)+(4*20*24)+(9*45*54)]/[(1*3*5)+(2*6*10)+(4*12*20)+(9*27*45)]
/ là phân số nha!!!!!!!!!!!!!
a,\(\dfrac{1}{4}\sqrt{180}+\sqrt{20}-\sqrt{45}+5\)
b,\(3\sqrt{\dfrac{1}{3}}+\dfrac{1}{4}\sqrt{48}-2\sqrt{3}\)
a) \(\dfrac{1}{4}\sqrt{180}+\sqrt{20}-\sqrt{45}+5=\dfrac{1}{4}.6\sqrt{5}+2\sqrt{5}-3\sqrt{5}+5=\dfrac{\sqrt{5}}{2}+5=\dfrac{10+\sqrt{5}}{2}\)b) \(3\sqrt{\dfrac{1}{3}}+\dfrac{1}{4}\sqrt{48}-2\sqrt{3}=\sqrt{3}+\sqrt{3}-2\sqrt{3}=0\)
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tính giá trị mỗi biểu thức sau
a/ T = 312 . 46/610
b/ 453 . 204 . 182 / 1805
c/ 315 + 36 / 311 + 32
a, T=312.46/610
T=312.(22)6/(2.3)10
T=312.212/210.310
T=32.22
T=9.4
T=36
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a) 72^3 * 54^2/104^4
b) 4^6 * 3^4 * 9^5/6^12
c) 21^2*14*125/35^5
d) 45^3*20^4+8^2/180^5
e) 11*3^22^6*3^7-9^15/(2*3^14)^2
Bai1 tính nhanh phép tính
a) 37581-9999
Bài2 tính nhanh
a) 36×28+36×82+64×69+64×41
b) A=41×66+34×41/3+7+11+...+79
c) 1×5×6+2×10×12+4×20×24+9×45×54/1×3×5+2×6×10+4×12×20+9×27×45
Bài 1 :
a) 37581 - 9999 = 37581 - 10000 - 1 = 27581 - 1 = 27580
k cho mình nha bạn !
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a)37581-9999=37581-(9999+1-1)=37581-(10000+1)=37581-10000-1=27581+1=27582
Tính nhanh : cho
A = 1 * 5 * 6 + 2 * 10 * 12 + 4 * 20 * 24 + 9 * 45 * 54
B = 1 * 3 * 5 + 2 * 6 * 10 + 4 * 12 * 20 + 9 * 27 * 45
Hãy tính A / B
a)\(\frac{45^{10}.5^{10}}{75^{10}}\)
b)\(\frac{8^{10}+4^{10}}{8^4+4^{11}}\)
c)\(\frac{4^{20}-2^{20}+6^{20}}{6^{20}-3^{20}+9^{20}}\)
d) \(\frac{14^{16}.21^{32}.45^{48}}{10^{16}.15^{32}.7^{96}}\)
