Ôn tập toán 6
Các câu hỏi tương tự
dễ lắm :
1,Tìm số đối : \(\dfrac{1}{2};\dfrac{-3}{4};\dfrac{7}{-12}\)
2, Thu gọn : \(\dfrac{2^4.3^3-2^4.3^3}{2^5.3^4-2^6.3^3}\)
Thu gọn:
A dfrac{2^4.3^3+2^3.3^4}{2^5.3^3-2^4.3^2} D dfrac{left(dfrac{1}{2}-dfrac{1}{3}right).left(dfrac{2}{3}-dfrac{3}{4}right)}{left(dfrac{1}{2}+dfrac{1}{3}right).left(dfrac{2}{3}+dfrac{3}{4}right)}
B dfrac{2^3-3^4-2^4.3^3}{2^5.3^4-2^6.3^3} E left(dfrac{1}{2}-dfrac{1}{3}-dfrac{3}{4}right).left(dfrac{2}{3}-dfrac{3}{4}+dfrac{5}{6}right)
C dfrac{dfrac{1}{2}-dfrac{1}{2}:dfrac{3}{4}-dfrac{3}{4}}{dfrac{2}{3}-dfrac{2}{3}:dfrac{5}{6}-dfrac{5}{6}}
Giúp...
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Thu gọn:
A = \(\dfrac{2^4.3^3+2^3.3^4}{2^5.3^3-2^4.3^2}\) D = \(\dfrac{\left(\dfrac{1}{2}-\dfrac{1}{3}\right).\left(\dfrac{2}{3}-\dfrac{3}{4}\right)}{\left(\dfrac{1}{2}+\dfrac{1}{3}\right).\left(\dfrac{2}{3}+\dfrac{3}{4}\right)}\)
B = \(\dfrac{2^3-3^4-2^4.3^3}{2^5.3^4-2^6.3^3}\) E = \(\left(\dfrac{1}{2}-\dfrac{1}{3}-\dfrac{3}{4}\right).\left(\dfrac{2}{3}-\dfrac{3}{4}+\dfrac{5}{6}\right)\)
C = \(\dfrac{\dfrac{1}{2}-\dfrac{1}{2}:\dfrac{3}{4}-\dfrac{3}{4}}{\dfrac{2}{3}-\dfrac{2}{3}:\dfrac{5}{6}-\dfrac{5}{6}}\)
Giúp mình với ! 10k nha
Thu gọn:
\(A=\dfrac{2^4.3^3+2^3.3^4}{2^5.3^3-2^{\text{ 4}}.3^3}\)
Rút gọn:
a) 2^12.3^5-4^6.3^6/2^12+9^3+8^4.3^5
B) 49^6.5-7^11/(-7)^10.5-2.49^5
Thu gọn :
C = \(\dfrac{\dfrac{1}{2}-\dfrac{1}{2}:\dfrac{3}{4}-\dfrac{3}{4}}{\dfrac{2}{3}-\dfrac{2}{3}:\dfrac{5}{6}-\dfrac{5}{6}}\)
Thu gọn các tổng sau:
a. A=8.5100.(\(\dfrac{1}{5}+\dfrac{1}{5^2}+...+\dfrac{1}{5^{100}}\)) +1
b. B=\(\dfrac{4}{3}-\dfrac{4}{3^2}+...-\dfrac{4}{3^{100}}\)
Bài 1: rút gọn
dfrac{16^3.3^{10}+120.6^9}{4^6.3^{12}+6^{11}}
left(dfrac{2}{3}right)^3.left(dfrac{-3}{4}right)^2.left(-1right)^{2013}
left(dfrac{1}{5}right)^{15}.left(dfrac{1}{4}right)^{20}
dfrac{9.5^{20}.27^9-3.9^{15}.25^9}{7.3^{29}.125^6-3.3^9.15^{19}}
dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}
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Bài 1: rút gọn
\(\dfrac{16^3.3^{10}+120.6^9}{4^6.3^{12}+6^{11}}\)
\(\left(\dfrac{2}{3}\right)^3.\left(\dfrac{-3}{4}\right)^2.\left(-1\right)^{2013}\)
\(\left(\dfrac{1}{5}\right)^{15}\).\(\left(\dfrac{1}{4}\right)^{20}\)
\(\dfrac{9.5^{20}.27^9-3.9^{15}.25^9}{7.3^{29}.125^6-3.3^9.15^{19}}\)
\(\dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
Rút gọn:
1) dfrac{45^2.3^8.10^5}{5^5.3^7.18^5}
2)dfrac{4^5.9^4+2.6^9}{2^{10}.3^8+6^8.20}
3) dfrac{15.3^{11}+4.27^4}{9^7}
4) dfrac{4^7.2^8}{3.2^{15}.16^2-5.2^2left(2^{10}right)^2}
5) dfrac{2^{19}.27^3+15.4^9.9^4}{6^9.2^{10}+12^{10}}
6) dfrac{12^6.5^2-2^{10}.3^5.5^2}{12^6.10-2^{12}.3^8}
Các bạn giải giúp mình, mình xin được cảm ơn trước!
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Rút gọn:
1) \(\dfrac{45^2.3^8.10^5}{5^5.3^7.18^5}\)
2)\(\dfrac{4^5.9^4+2.6^9}{2^{10}.3^8+6^8.20}\)
3) \(\dfrac{15.3^{11}+4.27^4}{9^7}\)
4) \(\dfrac{4^7.2^8}{3.2^{15}.16^2-5.2^2\left(2^{10}\right)^2}\)
5) \(\dfrac{2^{19}.27^3+15.4^9.9^4}{6^9.2^{10}+12^{10}}\)
6) \(\dfrac{12^6.5^2-2^{10}.3^5.5^2}{12^6.10-2^{12}.3^8}\)
Các bạn giải giúp mình, mình xin được cảm ơn trước!
a, thực hiện phép tính một cách hợp lí
P=(5.311+4.312):(39.52-39.23)
Q=14.29+14.71+(1+2+3+4+...+99).(199199.198-198198.199)
b,CMR:1.3.5....2013.2015+2.4.6....2014.2016 chia hết cho 9911