《2025年口算训练五年级数学上册人教版双色升级版》

$2.3 + 1.6 × 4 =$
$(80 - 18) ÷ 0.2 =$
$3.3 × 2 - 1.9 =$
$(12.5 + 2.5) ÷ 5 =$
$2.4 × 2 ÷ 4 =$
$6 - 1.6 × 3 =$
$(5.4 + 3.4) ÷ 4 =$
$(10 - 0.4) ÷ 3 =$
$8.4 ÷ 2 + 0.6 =$
$(30 - 11) × 0.3 =$
$9.6 ÷ 3 - 3.2 =$
$50 ÷ 0.5 + 7 =$
$(1.2 + 1.1) × 3 =$
$(7.1 - 1.3) × 3 =$
$6.9 - 2.3 × 3 =$
$(2.8 + 2) ÷ 2 =$
$4.2 + 1.5 × 3 =$
$(2 - 0.6) × 0.2 =$
$4.5 × 3 - 4.5 =$
$0.75 × (4.2 + 1.8) =$
$(12.5 + 2.5) × 8 =$

答案： 解析：这些题目都是基础的数学运算题目，主要考查四则运算的掌握情况。按照运算的优先级（先乘除后加减，有括号先算括号里的）进行计算即可。
答案：
$2.3 + 1.6 × 4 = 2.3 + 6.4 = 8.7$
$(80 - 18) ÷ 0.2 = 62 ÷ 0.2 = 310$
$3.3 × 2 - 1.9 = 6.6 - 1.9 = 4.7$
$(12.5 + 2.5) ÷ 5 = 15 ÷ 5 = 3$
$2.4 × 2 ÷ 4 = 4.8 ÷ 4 = 1.2$
$6 - 1.6 × 3 = 6 - 4.8 = 1.2$
$(5.4 + 3.4) ÷ 4 = 8.8 ÷ 4 = 2.2$
$(10 - 0.4) ÷ 3 = 9.6 ÷ 3 = 3.2$
$8.4 ÷ 2 + 0.6 = 4.2 + 0.6 = 4.8$
$(30 - 11) × 0.3 = 19 × 0.3 = 5.7$
$9.6 ÷ 3 - 3.2 = 3.2 - 3.2 = 0$
$50 ÷ 0.5 + 7 = 100 + 7 = 107$
$(1.2 + 1.1) × 3 = 2.3 × 3 = 6.9$
$(7.1 - 1.3) × 3 = 5.8 × 3 = 17.4$
$6.9 - 2.3 × 3 = 6.9 - 6.9 = 0$
$(2.8 + 2) ÷ 2 = 4.8 ÷ 2 = 2.4$
$4.2 + 1.5 × 3 = 4.2 + 4.5 = 8.7$
$(2 - 0.6) × 0.2 = 1.4 × 0.2 = 0.28$
$4.5 × 3 - 4.5 = 13.5 - 4.5 = 9$
$0.75 × (4.2 + 1.8) = 0.75 × 6 = 4.5$
$(12.5 + 2.5) × 8 = 15 × 8 = 120$

$7.5 - 2.5 × 2 =$2.5
$8.4 ÷ 4 × 1 =$2.1
$0.6 × 6 × 2 =$7.2
$5.4 - 0.4 + 1.6 =$6.6
$(3.2 - 0.8) ÷ 6 =$0.4
$4.6 + 3.7 × 1 =$8.3
$2.3 × 3 - 0.6 =$6.3
$1.9 - 0.9 ÷ 9 =$1.8
$1.5 × 4 + 4 =$10
$4.8 ÷ 2 + 1.8 =$4.2
$3.6 - 2.6 ÷ 2 =$2.3
$4.9 + 4.9 - 4.9 =$4.9
$10.5 × 2 ÷ 0.7 =$30
$8.1 - 1.6 × 5 =$0.1
$7.2 + 3.6 ÷ 3 =$8.4
$1.8 × 4 - 0.7 =$6.5
$60 ÷ 2 × 0.5 =$15
$(3.7 + 4.5) ÷ 2 =$4.1
$5.7 - 2.7 ÷ 3 =$4.8
$1.08 × 5 + 5 =$10.4
$8.5 - 7.5 ÷ 5 =$6.5

答案： 2.5
2.1
7.2
6.6
0.4
8.3
6.3
1.8
10
4.2
2.3
4.9
30
0.1
8.4
6.5
15
4.1
4.8
10.4
6.5