《2025年口算训练五年级数学上册人教版双色升级版》

$0.56÷0.7=$
$4.8÷10=$
$4.9÷0.49=$
$3.5×10=$
$0.15×8=$
$2.4÷0.3=$
$7.2÷0.6=$
$1.8×0.5=$
$0.2×0.1=$
$2.8÷0.4=$
$2.8÷0.7=$
$0.7×4=$
$0.4×7=$
$6.3÷0.9=$
$6.3÷0.7=$
$0.9×7=$
$0.7×9=$
$4.5÷0.5=$
$0.5×4.5=$
$3.6÷0.4=$
$3.6÷0.9=$

答案： 解析：这些题目都是基础的数学运算，包括除法和乘法，主要考察的是小数和整数的运算能力。
答案：
$0.56 ÷ 0.7 = 0.8$
$4.8 ÷ 10 = 0.48$
$4.9 ÷ 0.49 = 10$
$3.5 × 10 = 35$
$0.15 × 8 = 1.2$
$2.4 ÷ 0.3 = 8$
$7.2 ÷ 0.6 = 12$
$1.8 × 0.5 = 0.9$
$0.2 × 0.1 = 0.02$
$2.8 ÷ 0.4 = 7$
$2.8 ÷ 0.7 = 4$
$0.7 × 4 = 2.8$
$0.4 × 7 = 2.8$
$6.3 ÷ 0.9 = 7$
$6.3 ÷ 0.7 = 9$
$0.9 × 7 = 6.3$
$0.7 × 9 = 6.3$
$4.5 ÷ 0.5 = 9$
$0.5 × 4.5 = 2.25$
$3.6 ÷ 0.4 = 9$
$3.6 ÷ 0.9 = 4$

1. 得数保留一位小数。
$2.64÷0.5\approx$5.3
$0.35÷2\approx$0.2
$0.72÷6\approx$0.1
$0.96÷12\approx$0.1
$0.8×0.7\approx$0.6
$0.12×8\approx$1.0
2. 得数保留两位小数。
$0.762÷3\approx$0.25
$3.4÷7\approx$0.49
$2.73÷100\approx$0.03
$1÷3\approx$0.33
$2.3×0.06\approx$0.14
$0.64×0.6\approx$0.38
$5.2÷3\approx$1.73
$2.5÷6\approx$0.42
$4.9÷8\approx$0.61
$7.2÷7\approx$1.03
$0.65×0.7\approx$0.46
$5.1÷9\approx$0.57
$4÷9\approx$0.44

答案： 1. $2.64÷0.5=5.28\approx5.3$
$0.35÷2=0.175\approx0.2$
$0.72÷6=0.12\approx0.1$
$0.96÷12=0.08\approx0.1$
$0.8×0.7=0.56\approx0.6$
$0.12×8=0.96\approx1.0$
2. $0.762÷3=0.254\approx0.25$
$3.4÷7\approx0.4857\approx0.49$
$2.73÷100=0.0273\approx0.03$
$1÷3\approx0.3333\approx0.33$
$2.3×0.06=0.138\approx0.14$
$0.64×0.6=0.384\approx0.38$
$5.2÷3\approx1.7333\approx1.73$
$2.5÷6\approx0.4167\approx0.42$
$4.9÷8=0.6125\approx0.61$
$7.2÷7\approx1.0286\approx1.03$
$0.65×0.7=0.455\approx0.46$
$5.1÷9\approx0.5667\approx0.57$
$4÷9\approx0.4444\approx0.44$