Tính:34/11 * 1269/46 * 23/17 * 22/9
34/11*1269/46*23/17*22/9
\(\frac{34}{11}\cdot\frac{1269}{46}\cdot\frac{23}{17}\cdot\frac{22}{9}\)
\(=\frac{34\cdot1269\cdot23\cdot22}{11\cdot46\cdot17\cdot9}\)
\(=\frac{17\cdot2\cdot141\cdot9\cdot23\cdot11\cdot2}{11\cdot23\cdot2\cdot17\cdot9}\)
\(=\frac{2\cdot141\cdot2}{2}\)
\(=141\cdot2\)
\(=282\)
\(\frac{34}{11}\)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
Thực hiện phép tính (tính hợp lí nếu có thể):
-5/17 . -9/23 + 9/23 . -22/17 + 11 9/23
\(=\dfrac{9}{23}\left(\dfrac{5}{17}-\dfrac{22}{17}\right)+11+\dfrac{9}{23}=11\)
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.
tính 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+50-999-888-777-666-555-444-333-222-111
nhanh nhé
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+4
7+48+49+50-999-888-777-666-555-444-333-222-111= -3720