《2025年速算天地数学口算心算五年级上册苏教版》

3+0.5=3.5
3-0.5=2.5
3×0.5=1.5
2÷0.5=4
0.8+0.2=1
0.8-0.2=0.6
0.8×0.2=0.16
0.8÷0.2=4
0.5+0.25=0.75
0.5-0.25=0.25
0.5×0.25=0.125
0.5÷0.25=2
0.9+0.9=1.8
0.9-0.9=0
0.9×0.9=0.81
0.9÷0.9=1
2+0.25=2.25
2-0.25=1.75
2×0.25=0.5
0.24+0.3=0.54
7.1-3.8=3.3
4.8×0.2=0.96
0.45÷0.15=3
4+0.46=4.46
7.6-7=0.6
0.1×0.43=0.043
0.78÷2.6=0.3
0.98-0.8=0.18
0.16×0.5=0.08
0.64÷1.6=0.4
0.13×0.4=0.052
0.01÷0.1=0.1
0.98÷0.49=2
2÷0.5=4
4.88+0.2=5.08
7.36-7=0.36
4+3.96=7.96
0.3×0.28=0.084

答案： 解析：本题主要考查小数的加减乘除四则运算，直接进行计算即可。
答案：
$3 + 0.5 = 3.5$
$3 - 0.5 = 2.5$
$3 × 0.5 = 1.5$
$2 ÷ 0.5 = 4$
$0.8 + 0.2 = 1$
$0.8 - 0.2 = 0.6$
$0.8 × 0.2 = 0.16$
$0.8 ÷ 0.2 = 4$
$0.5 + 0.25 = 0.75$
$0.5 - 0.25 = 0.25$
$0.5 × 0.25 = 0.125$
$0.5 ÷ 0.25 = 2$
$0.9 + 0.9 = 1.8$
$0.9 - 0.9 = 0$
$0.9 × 0.9 = 0.81$
$0.9 ÷ 0.9 = 1$
$2 + 0.25 = 2.25$
$2 - 0.25 = 1.75$
$2 × 0.25 = 0.5$
$0.24 + 0.3 = 0.54$
$7.1 - 3.8 = 3.3$
$4.8 × 0.2 = 0.96$
$0.45 ÷ 0.15 = 3$
$4 + 0.46 = 4.46$
$7.6 - 7 = 0.6$
$0.1 × 0.43 = 0.043$
$0.78 ÷ 2.6 = 0.3$
$0.98 - 0.8 = 0.18$
$0.16 × 0.5 = 0.08$
$0.64 ÷ 1.6 = 0.4$
$0.13 × 0.4 = 0.052$
$0.01 ÷ 0.1 = 0.1$
$0.98 ÷ 0.49 = 2$
$2 ÷ 0.5 = 4$
$4.88 + 0.2 = 5.08$
$7.36 - 7 = 0.36$
$4 + 3.96 = 7.96$
$0.3 × 0.28 = 0.084$