《2025年小学数学计算高手每日10分钟五年级数学下册苏教版》

解方程。
$0.4x + 1.2 = 2.6$
$0.99(x + 4.5) = 8.91$
$10.5\div x = 0.5$
$98.7\div x = 3$
$340 - 2x = 270$
$5.6x - 4.2 = 12.6$
$5(x + 7) = 55$
$12x - 76 = 68$
$8x + 9(x - 2) = 84$
$12 + 6x = 25.8$
$7x - 13.5 = 4$
$4.4x + 36 = 88.8$
$7.7x + 1.5 = 40$
$5.8x + 33 = 73.6$
$3.6x + 6 = 27.6$

答案： $x = 3.5 \quad x = 4.5 \quad x = 21 \quad x = 32.9 \quad x = 35 \quad x = 3 \quad x = 4 \quad x = 12 \quad x = 6 \quad x = 2.3 \quad x = 2.5 \quad x = 12 \quad x = 5 \quad x = 7 \quad x = 6$