《2025年速算天地数学口算心算五年级上册苏教版》

🦋0.46 - 0.16 = 0.3
0.46 + 0.1 = 0.56
0.46 + 1 = 1.46
0.78 + 0.02 = 0.8
0.78 + 0.2 = 0.98
0.78 + 2 = 2.78
0.78 - 0.02 = 0.76
0.78 - 0.2 = 0.58
0.26 + 0.5 = 0.76
0.59 - 0.59 = 0
2.4 + 0.6 = 3
2.4 - 0.6 = 1.8
2.6 + 0.4 = 3
2.6 - 0.4 = 2.2
1.9 + 2.7 = 4.6
2.9 + 1.7 = 4.6
2.9 - 1.7 = 1.2
2.7 - 1.9 = 0.8
0.25 + 0.15 = 0.4
0.25 - 0.15 = 0.1
🦋0.38 - 0.28 = 0.1
0.38 + 0.28 = 0.66
0.45 + 0.6 = 1.05
0.45 + 0.06 = 0.51
0.45 + 6 = 6.45
0.45 - 0.25 = 0.2
0.45 - 0.4 = 0.05
0.45 - 0.05 = 0.4
4.5 + 5 = 9.5
4.5 + 0.5 = 5
4.5 + 0.05 = 4.55
3.9 - 1.9 = 2
3.9 - 0.9 = 3
3.9 - 2.9 = 1
5.7 - 5.3 = 0.4
5.7 - 0.7 = 5
5.7 - 5 = 0.7
0.87 - 0.5 = 0.37
0.87 - 0.05 = 0.82
4.4 - 4 = 0.4

答案： 解析：这些题目都是基础的加减法口算题，主要考查速算能力。
答案：
$0.46 - 0.16 = 0.3$
$0.46 + 0.1 = 0.56$
$0.46 + 1 = 1.46$
$0.78 + 0.02 = 0.8$
$0.78 + 0.2 = 0.98$
$0.78 + 2 = 2.78$
$0.78 - 0.02 = 0.76$
$0.78 - 0.2 = 0.58$
$0.26 + 0.5 = 0.76$
$0.59 - 0.59 = 0$
$2.4 + 0.6 = 3$
$2.4 - 0.6 = 1.8$
$2.6 + 0.4 = 3$
$2.6 - 0.4 = 2.2$
$1.9 + 2.7 = 4.6$
$2.9 + 1.7 = 4.6$
$2.9 - 1.7 = 1.2$
$2.7 - 1.9 = 0.8$
$0.25 + 0.15 = 0.4$
$0.25 - 0.15 = 0.1$
$0.38 - 0.28 = 0.1$
$0.38 + 0.28 = 0.66$
$0.45 + 0.6 = 1.05$
$0.45 + 0.06 = 0.51$
$0.45 + 6 = 6.45$
$0.45 - 0.25 = 0.2$
$0.45 - 0.4 = 0.05$
$0.45 - 0.05 = 0.4$
$4.5 + 5 = 9.5$
$4.5 + 0.5 = 5$
$4.5 + 0.05 = 4.55$
$3.9 - 1.9 = 2$
$3.9 - 0.9 = 3$
$3.9 - 2.9 = 1$
$5.7 - 5.3 = 0.4$
$5.7 - 0.7 = 5$
$5.7 - 5 = 0.7$
$0.87 - 0.5 = 0.37$
$0.87 - 0.05 = 0.82$
$4.4 - 4 = 0.4$