\(\overrightarrow{\frac{31x32-62}{30x1}}\)
Tinh nhanh
117 x ( 36 + 62 +17 ) x ( 62 + 36 )
dat tinh roi tinh
68*35
17*86
175*42
62*49
53*29
1023*29
2075*23
ai nhanh minh tick cho
ket ban nha
\(\frac{62}{36}\)+ \(\frac{32}{36}\)=
\(\frac{34}{54}\)+ \(\frac{43}{54}\)=
ai nhanh tay mình cho 3 tick
Tinh nhanh 16-18+20-22+....-62+64-66+68
Tinh nhanh\(\frac{3}{4}X\frac{7}{9}+\frac{3}{4}X\frac{2}{9}\)
1 . DAT TINH ROI TINH
21637:62 ; 5623:44 ; 2365:37 ; 12653:57 ; 45637:73
Tinh nhanh : \(\frac{3x5x7x9}{5x7x9x12};\frac{2}{5}:\frac{3}{7}x\frac{3}{7}:\frac{2}{5}\)
Tinh nhanh:
\(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+\frac{1}{64}+\frac{1}{128}\)