Các câu hỏi tương tự
Tính:
a) 2^5 x 13^12 x 7^8 : 27 x 13^10 x 7^9
b) 2^n x 11 x 3 : 6^n x 3
c) 5^5 x 7 x 9^5 : 15^10
d) 7 x 8^10 x 27^9 - 8 x 9^13 x 2^27 : 7 x 6^26 x 2^2 - 2^4 x 8^3 x 27^9
e) 2^2^1^2015
f) 2015^0^2015^0^2015
Tính
A=1/2×9+1/9×7+1/7×19+...+1/252×509
B=1/10×9+1/18×13+1/26×17+...+1/802×405
C=2/4×7-3/5×9+2/7×10-3/9×13+...+2/301×304-3/401×405
Thực hiện phép tính:
1,-4/7 + 2/3x -9/14
2,17/13 - ( 4/13 - 11 )
3, 8 2/7 - ( 3 4/9 + 4 2/7 )
5, ( 2/3 - 1 1/2): 4/3 + 1/2
6, -5/13 + 2/5 + -8/13 + 3/5 - 3/7
7, 6/5 x 3/7 + 6/5 : 7/10 + 6/5
Bài 3: Tính nhanh:a) 15dfrac{3}{13}-left(3dfrac{4}{7}+8dfrac{3}{13}right)b) left(7dfrac{4}{9}+4dfrac{7}{11}right)-3dfrac{4}{9}c) dfrac{-7}{9}.dfrac{4}{11}+dfrac{-7}{9}.dfrac{7}{11}+5dfrac{7}{9}d) 50%.1dfrac{1}{3}.10.dfrac{7}{35}.0,75e) dfrac{3}{1.4}+dfrac{3}{4.7}+dfrac{3}{7.10}+...+dfrac{3}{40.43}
Đọc tiếp
Bài 3: Tính nhanh:
a) \(15\dfrac{3}{13}\)-\(\left(3\dfrac{4}{7}+8\dfrac{3}{13}\right)\)
b) \(\left(7\dfrac{4}{9}+4\dfrac{7}{11}\right)\)-\(3\dfrac{4}{9}\)
c) \(\dfrac{-7}{9}\).\(\dfrac{4}{11}\)+\(\dfrac{-7}{9}\).\(\dfrac{7}{11}\)+\(5\dfrac{7}{9}\)
d) 50%.\(1\dfrac{1}{3}\).10.\(\dfrac{7}{35}\).0,75
e) \(\dfrac{3}{1.4}\)+\(\dfrac{3}{4.7}\)+\(\dfrac{3}{7.10}\)+...+\(\dfrac{3}{40.43}\)
Tính:
a) 2^5 x 13^12 x 7^8 : 2^7 x 13^10 x 7^9
b) 2^n x 11 x 3 : 6^n x 3
c) 5^5 x 7 x 9^5 : 15^10
d) 7 x 8^10 x 27^9 - 8 x 9^13 x 2^27 : 7 x 6^26 x 2^2 - 2^4 x 8^3 x 27^9
e) 2^2^1^2015
f) 2015^0^2015^0^2015
Tính
a) ( -3/5+4/9 ):7/11 + (-2/5 +5/9 ) :7/11
b) 4 5/9:(-5/7) +49/9 :(-5/7)
c)6/7 :( 3/26 -3/13 )+ 6/7:(1/10 -8/5)
BÀI 1 : thực hiện phép tính a)35/17+-9/5+-18/17+4/5 b)-7/19 nhân 3/17+-7/19 nhân 8/11+7/9 c)26/15+-17/3+-6/13-11/15 d)-3/14 nhân 4/13+-3/14 nhân 9/13+3/4 e).31/17+-5/13+-8/13-14/17 f)-5/7 nhân 2/11+-5/11 nhân 9/11 cộng 5/7
Xem chi tiết
4.24.5^2-(3^3.18+3^3.12)
31.15.7^2.4-31.49.40
1+2+3+4+5+6+7+8+9+10
1+3+5+7+9+11+13+15+19
2+6+10+14+22+23+26+34
5+8+11+14+17+20+23+26+29
1+6+11+16+21+26+31+36+41+47+51
10+13+16+19+22+25+28+31+34+37+40
5+7+9+11+13+15+17+3+8+13+18+23+28
4+7+10+13+16+19+5+9+13+17+21+25
a, -3/7 + 15/26 - 2/13 + 3/7
b,2.3/7 - 5/3 : 1/9 - 3/7
giúp em vs ạ đề là thực hiện phép tính