《2025年速算天地数学口算心算五年级上册苏教版》

速算 3
2.9+3.05=5.95 5-0.6-0.4=4
3.7-2.6=1.1 4.3+3.7+6.9=14.9
3.6+2.9=6.5 2.5+7.5+3.3=13.3
2.7-1.9=0.8 3.9+4.5+0.1=8.5
4.5+3.07=7.57 6.3+3.8+2.2=12.3
2.87-1.17=1.7 5.6+2.8+4.4=12.8
3.8-2.9=0.9 9.2-6.4-2.6=0.2
4.6+2.7=7.3 3.5-1.8-1.5=0.2
3.58-2.02=1.56 4-1.52-0.48=2
1.5+4.5=6 3.71+0.8+0.29=4.8
4.3+2.6=6.9 0.8+0.6=1.4
5.09-4.03=1.06 4.7-1.7=3
1-0.01=0.99 3.45+0.5=3.95
4.6+2.8=7.4 3.45-3.4=0.05
9.84-1.64=8.2 9.5+8.2=17.7
9.58-0.3=9.28 6.6+0.8=7.4
5.7+7.5=13.2 5.97-2.5=3.47
3-0.2=2.8 2.2+0.5=2.7
5.7+2.3=8 0.9+5.8=6.7
1.85+0.15=2 2.4+3.3=5.7

答案： 解析：本题主要考查小数的加减法运算，包括简单的小数相加减以及利用加法交换律、结合律进行简便运算。
答案：
$2.9 + 3.05 = 5.95$
$5 - 0.6 - 0.4 = 4$
$3.7 - 2.6 = 1.1$
$4.3 + 3.7 + 6.9 = 14.9$
$3.6 + 2.9 = 6.5$
$2.5 + 7.5 + 3.3 = 13.3$
$2.7 - 1.9 = 0.8$
$3.9 + 4.5 + 0.1 = 8.5$
$4.5 + 3.07 = 7.57$
$6.3 + 3.8 + 2.2 = 12.3$
$2.87 - 1.17 = 1.7$
$5.6 + 2.8 + 4.4 = 12.8$
$3.8 - 2.9 = 0.9$
$9.2 - 6.4 - 2.6 = 0.2$
$4.6 + 2.7 = 7.3$
$3.5 - 1.8 - 1.5 = 0.2$
$3.58 - 2.02 = 1.56$
$4 - 1.52 - 0.48 = 2$
$1.5 + 4.5 = 6$
$3.71 + 0.8 + 0.29 = 4.8$
$4.3 + 2.6 = 6.9$
$0.8 + 0.6 = 1.4$
$5.09 - 4.03 = 1.06$
$4.7 - 1.7 = 3$
$1 - 0.01 = 0.99$
$3.45 + 0.5 = 3.95$
$4.6 + 2.8 = 7.4$
$3.45 - 3.4 = 0.05$
$9.84 - 1.64 = 8.2$
$9.5 + 8.2 = 17.7$
$9.58 - 0.3 = 9.28$
$6.6 + 0.8 = 7.4$
$5.7 + 7.5 = 13.2$
$5.97 - 2.5 = 3.47$
$3 - 0.2 = 2.8$
$2.2 + 0.5 = 2.7$
$5.7 + 2.3 = 8$
$0.9 + 5.8 = 6.7$
$1.85 + 0.15 = 2$
$2.4 + 3.3 = 5.7$