《2025年阳光同学计算小达人五年级数学下册冀教版》

1. 直接写出得数。（建议3分钟完成）
- $0.6×9 =$ $7.5÷25 =$ $3.08 - 2.8 =$ $1.41 + 0.79 =$
- $3.2÷0.8 =$ $25×1.2 =$ $4.9÷0.07 =$ $15÷0.15 =$
- $2.3×3 =$ $6.48÷8 =$ $7.2÷4 =$ $7.5×8 =$
- $3.25×0 =$ $3.02 + 4.8 =$ $740÷37 =$ $0.9 + 1.01 =$
- $0.4×50 =$ $0.45×30 =$ $74×0.5 =$ $16÷400 =$

答案： 5.4@@0.3@@0.28@@2.2@@4@@30@@70@@100@@6.9@@0.81@@1.8@@60@@0@@7.82@@20@@1.91@@20@@13.5@@37@@0.04

2. 解方程。（建议4分钟完成）
- $7x = 3.5×8$ $8x - 50 = 270$ $2.9x + 6.3x = 4.6$
- $2.5x - 6×2.5 = 15$ $3.5×2 + 9x = 34$ $0.7x + 3.6÷0.4 = 11.1$

答案： $x = 4$@@$x = 40$@@$x = 0.5$@@$x = 12$@@$x = 3$@@$x = 3$

照例子，算一算。
$22.2×13 - 66.6$ $9.99 - 2.4×3.33$ $0.77×0.7 - 0.11×2.8$
$= 22.2×13 - 3×22.2$
$= 22.2×(13 - 3)$
$= 22.2×10$
$= 222$

答案： 提升练 1.998 0.231