Các câu hỏi tương tự
Tính nhanh:
a, A=\(\frac{18\times123+9\times4567\times2+3\times5310\times6}{1+4+7+10+......+55+58-410}\)
b, B= \(\frac{2011\times2012+794}{2011\times2013-1217}\)
Tính nhanh:
\(\frac{18x123+9x4567+3x5310x6}{\left(2+4+6+....+18+20+22\right)+48}\)
1. Tính nhanh:
\(\frac{18x123+9x4567+3x5310x6}{\left(2+4+6+...+18+20+22\right)+48}\)
Tính (Theo mẫu):
MẪU\(\frac{9}{10}\times\frac{5}{6}=\frac{9\times5}{10\times6}=\frac{3\times3\times5}{5\times2\times3\times2}=\frac{3}{4}\)\(\frac{3}{4}\)
\(\frac{12}{35}\div\frac{35}{25}\)
\(\frac{9}{22}\times\frac{33}{18}\)
Tính nhanh:\(\frac{1\times2\times3+2\times4\times6+3\times6\times9+4\times8\times12+5\times10\times15}{1\times3\times5+2\times6\times10+3\times9\times15+4\times12\times20+5\times15\times25}-\frac{1+2+3+2+4+6+3+6+9+4+8+12+5+10+15}{1+3+5+2+6+10+3+9+15+4+12+20+5+15+25}\)
Tính tổng sau, biết : \(A=\frac{0,18\times1230+0,9\times4567\times2+3\times5310\times0,6}{1+4+7+10+...+52+55+58-440}\)
tính nhanh:
18*123+9*4567*2+3*5310*6
_______________________
2+4+6+8+........+18+20+22+48
dấu * là dấu nhân ạ.Ai giải nhanh+đúng mk tích nhe
\(\frac{\text{18 x 123 + 9 x 4567 x 2 + 5310 x 6}}{\text{( 2 + 4 + 6 + 8 +...+ 18 +20 + 22 ) + 48}}\)
18 x 9 x 4567 x 2 x 3 x 5310 x 6
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( 2 + 4+6+8 + ...+18 +20+22) +48