《2025年口算训练五年级数学上册人教版双色升级版》

$5×0.1 - 0.27 =$
$1.25×0.08 =$
$(12.8 + 3.7)÷0.01 =$
$24.8÷0.8 =$
$4.2×0.7÷49 =$
$0.404÷0.4 =$
$(4.08 - 1.93)×0.2 =$
$28×2.5 + 12÷2.5 =$
$0.02×(1.02 + 0.98) =$
$0.68÷0.17×0.9 =$
$(1.9 + 3.8)÷3 =$
$12.5×0.4 + 0.4×0.5 =$
$1.24 + 0.78÷3 =$
$(10 - 0.2)÷2 =$
$5.8÷0.02×0.1 =$
$0.35×4÷0.7 =$
$(1.24 + 0.56)÷0.9 =$
$0.22 + 0.4÷0.1 =$
$6.24÷0.3 + 0.3 =$
$(1.24 + 0.6)×3 =$
$(31.4 + 3.14)÷3.14 =$

答案： 解析：这些题目主要考查小数的四则运算，包括乘法、除法、加法和减法，以及运算的优先级。
答案：
$5 × 0.1 - 0.27 = 0.5 - 0.27 = 0.23$
$1.25 × 0.08 = 0.1$
$(12.8 + 3.7) ÷ 0.01 = 16.5 ÷ 0.01 = 1650$
$24.8 ÷ 0.8 = 31$
$4.2 × 0.7 ÷ 49 = 2.94 ÷ 49 = 0.06$
$0.404 ÷ 0.4 = 1.01$
$(4.08 - 1.93) × 0.2 = 2.15 × 0.2 = 0.43$
$28 × 2.5 + 12 ÷ 2.5 = 70 + 4.8 = 74.8$
$0.02 × (1.02 + 0.98) = 0.02 × 2 = 0.04$
$0.68 ÷ 0.17 × 0.9 = 4 × 0.9 = 3.6$
$(1.9 + 3.8) ÷ 3 = 5.7 ÷ 3 = 1.9$
$12.5 × 0.4 + 0.4 × 0.5 = 5 + 0.2 = 5.2$
$1.24 + 0.78 ÷ 3 = 1.24 + 0.26 = 1.5$
$(10 - 0.2) ÷ 2 = 9.8 ÷ 2 = 4.9$
$5.8 ÷ 0.02 × 0.1 = 290 × 0.1 = 29$
$0.35 × 4 ÷ 0.7 = 1.4 ÷ 0.7 = 2$
$(1.24 + 0.56) ÷ 0.9 = 1.8 ÷ 0.9 = 2$
$0.22 + 0.4 ÷ 0.1 = 0.22 + 4 = 4.22$
$6.24 ÷ 0.3 + 0.3 = 20.8 + 0.3 = 21.1$
$(1.24 + 0.6) × 3 = 1.84 × 3 = 5.52$
$(31.4 + 3.14) ÷ 3.14 = 34.54 ÷ 3.14 = 11$

$24×0.4 =$9.6
$3.76÷100 =$0.0376
$1 - 0.53 =$0.47
$0.26 + 2.6 =$2.86
$3.48÷3 =$1.16
$4×2.4 =$9.6
$0.81 - 0.63 =$0.18
$6.3÷6.3 =$1
$4.12 + 0.9 =$5.02
$1.9×0.4 =$0.76
$3 - 2.51 =$0.49
$1.6÷0.8 =$2
$2÷8 =$0.25
$0.16 + 0.84 =$1
$0.45×2 =$0.9
$0.53 - 0.18 =$0.35
$3.8 + 0.09 =$3.89
$0.25÷0.5 =$0.5
$0.91÷0.013 =$70
$4.05 + 5.5 =$9.55
$7÷1.4 =$5

答案： 解析：这些题目都是基础的数学运算题目，包括乘法、除法、加法和减法，涉及到小数和整数的计算。我们需要按照运算规则，逐一计算每个表达式的结果。
答案：
$24 × 0.4 = 9.6$
$3.76 ÷ 100 = 0.0376$
$1 - 0.53 = 0.47$
$0.26 + 2.6 = 2.86$
$3.48 ÷ 3 = 1.16$
$4 × 2.4 = 9.6$
$0.81 - 0.63 = 0.18$
$6.3 ÷ 6.3 = 1$
$4.12 + 0.9 = 5.02$
$1.9 × 0.4 = 0.76$
$3 - 2.51 = 0.49$
$1.6 ÷ 0.8 = 2$
$2 ÷ 8 = 0.25$
$0.16 + 0.84 = 1$
$0.45 × 2 = 0.9$
$0.53 - 0.18 = 0.35$
$3.8 + 0.09 = 3.89$
$0.25 ÷ 0.5 = 0.5$
$0.91 ÷ 0.013 = 70$
$4.05 + 5.5 = 9.55$
$7 ÷ 1.4 = 5$