《2025年通城学典计算能手五年级数学下册青岛版五四制》

一、解方程**
$6x + 0.25x = 40$ $40 \times 5 + 44x = 640$ $5x - 7 \times \frac{1}{3} = \frac{9}{10}$
$6x + 2.4 = 3.6$ $\frac{3}{8}x \div 12 = \frac{1}{2}$ $\frac{5}{6} + \frac{1}{6}x = 2$
$20x + 5 \times 1.2 = 48$ $(x + 3.2) \div 0.6 = 12$ $8x - 4.8 \times 2 = 0.08$
$x + 3x = 56$ $\frac{3}{4}x - \frac{1}{4}x = 9$ $8x \div \frac{1}{2} = \frac{3}{5}$
$x + \frac{7}{10}x = 340$ $0.6x + 25 = 40$ $2\frac{5}{8}x + 1\frac{1}{2} = 2.6 \times 3$

答案： $x = 6.4$@@$x = 10$@@$x=\frac{97}{150}$@@$x = 0.2$@@$x = 16$@@$x = 7$@@$x = 2.1$@@$x = 4$@@$x = 1.21$@@$x = 14$@@$x = 18$@@$x=\frac{3}{80}$@@$x = 200$@@$x = 25$@@$x = 2.4$