34/11*1269/46*23/17*22/9
Tính:34/11 * 1269/46 * 23/17 * 22/9
34/11 * 1269/46 * 23/17 * 22/9
=(34 x 1269 x 23 x 22) / (11 x 46 x 17 x 9)
=(17 x 2 x 141 x 9 x 23 x 11 x 2) / (11 x 23 x 2 x 17 x 9)
=(141 x 2) / 1
=282/1
=282
@_@CHÚC BẠN HỌC TỐT!!!@_@
\(\frac{34}{11}\)x\(\frac{1269}{46}\)x\(\frac{23}{17}\)x\(\frac{22}{9}\)
34/11 x 27/46 x 23/17 x 22/9
\(\frac{34}{11}\cdot\frac{27}{46}\cdot\frac{23}{17}\cdot\frac{22}{9}\)
\(=\frac{34\cdot27\cdot23\cdot22}{11\cdot46\cdot17\cdot9}\)
\(=\frac{2\cdot17\cdot3\cdot3\cdot3\cdot23\cdot2\cdot11}{11\cdot2\cdot23\cdot17\cdot3\cdot3}\)
\(=\frac{3\cdot2}{1}\)
\(=6\)
=))
\(\frac{34}{11}x\frac{27}{46}x\frac{23}{17}x\frac{22}{9}\)
= 2/1 x 3/2 x 1/1 x 2/1
= 6
\(\frac{34}{11}.\frac{27}{46}.\frac{23}{17}.\frac{22}{9}\)
\(=\frac{34.27.23.22}{11.46.17.9}\)
\(=\frac{3.2}{1}=6\)
Hơi tắt chút nha, sorry !!!
Tính nhanh giá trị biểu thức sau:
A=34/11*27/46*23/17*22/9
\(A=\dfrac{34}{11}.\dfrac{27}{46}.\dfrac{23}{17}.\dfrac{22}{9}\)
\(A=\dfrac{34.27.23.22}{11.46.17.9}=\dfrac{17.2.9.3.23.11.2}{11.23.2.17.9}=\dfrac{2.3}{1}=\dfrac{6}{1}=6\)
Tính nhanh giá trị của biểu thức sau:
a, A=34/11*27/46*23/17*22/9
b, B=2006*125+1000/126*2006-1006
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50=1275
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50.
Có ai rảnh đâu mà đi ngồi cộng ngần đấy số ra.
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
4.24.52-(33.18+33.12)
=4.24.25-[27.(18+12)]
=(4.25).24-[27.30]
=100.24-810
=2400-810
=1590
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 = 1590
#HT#
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50
NHỚ KẾT BẠN VỚI MÌNH NHA '-'
1 + 2 + 3 +...+ 50
Dãy trên có số số hạng là:
\(\left(50-1\right)+1=50\) (số)
Tổng của chúng là:
\(\frac{\left(50+1\right)\cdot50}{2}=1275\)
Vậy tổng của chúng là 1275
~Học tốt~