1. 直接写出得数。
$0.56 + 0.7 =$ $0.125×4 =$ $3.9 - 0.13 =$
$0.25×0.4 =$ $1.6 - 0.8 =$ $1 + 2.5 =$
$3.28×0.1 =$ $0.01×0.1 =$ $0.25×0.8 =$
$2.5 + 1.55 =$ $2.36 + 3.1 =$ $1.14×0.2 =$
$88÷11 =$ $8×0.125 =$ $355 - 278 =$
$110×90 =$ $4.18 - 0.08 =$ $12.5 + 11.1 =$

$0.56 + 0.7 = 1.26$
$0.125×4 = 0.5$
$3.9 - 0.13 = 3.77$
$0.25×0.4 = 0.1$
$1.6 - 0.8 = 0.8$
$1 + 2.5 = 3.5$
$3.28×0.1 = 0.328$
$0.01×0.1 = 0.001$
$0.25×0.8 = 0.2$
$2.5 + 1.55 = 4.05$
$2.36 + 3.1 = 5.46$
$1.14×0.2 = 0.228$
$88÷11 = 8$
$8×0.125 = 1$
$355 - 278 = 77$
$110×90 = 9900$
$4.18 - 0.08 = 4.1$
$12.5 + 11.1 = 23.6$

2. 列竖式计算。
$8.94 + 3.26 =$ $5.8 + 3.24 =$ $11 - 7.25 =$
$14.26 - 10.19 =$ $20.31 - 12.82 =$ $18.27 + 11.73 =$

8.94
+ 3.26
------
12.20
$8.94 + 3.26 = 12.2$
5.80
+ 3.24
------
9.04
$5.8 + 3.24 = 9.04$
11.00
7.25
------
3.75
$11 - 7.25 = 3.75$
14.26
-10.19
------
4.07
$14.26 - 10.19 = 4.07$
20.31
-12.82
------
7.49
$20.31 - 12.82 = 7.49$
18.27
+11.73
------
30.00
$18.27 + 11.73 = 30$

3. 解决问题。
出租车的计费标准：实际车费 = 里程费 + 时长费。
李老师乘坐出租车从家到超市，共行驶了 4 千米，用时 12 分。李老师的车费是多少元钱？

1.79×4 = 7.16（元）
0.45×12 = 5.4（元）
7.16 + 5.4 = 12.56（元）
答：李老师的车费是12.56元钱。