《2025年心算口算巧算六年级上册北师大版》

$\frac{5}{12}x = \frac{5}{6} × \frac{1}{4}$

答案： $\frac{5}{12}x = \frac{5}{24}$
$x = \frac{5}{24} × \frac{12}{5}$
$x = \frac{1}{2}$

$4x × 12 = 15 × \frac{2}{3}$

答案： $48x = 10$
$x = 10 ÷ 48$
$x = \frac{5}{24}$

$\frac{3}{8}x = 18 × \frac{2}{3}$

答案： $\frac{3}{8}x = 12$
$x = 12 × \frac{8}{3}$
$x = 32$

$x + \frac{3}{4} = \frac{23}{24}$

答案： $x = \frac{23}{24} - \frac{18}{24}$
$x = \frac{5}{24}$

$\frac{5}{8}x + 1 = 26$

答案： $\frac{5}{8}x = 25$
$x = 25 × \frac{8}{5}$
$x = 40$

$\frac{1}{4}x - \frac{1}{12}x = 6$

答案： $\frac{3}{12}x - \frac{1}{12}x = 6$
$\frac{2}{12}x = 6$
$\frac{1}{6}x = 6$
$x = 36$