一、口算。
$5+13=$
$10-4=$
$18-10=$
$17-7=$
$2+13=$
$3+10=$
$13+0=$
$19-9=$
$14+4=$
$13-3=$
$16+1=$
$14-10=$
$12+6=$
$16-10=$
$1+10=$
$19+0=$
$10-5=$
$17+1=$
$14+3=$
$6-2=$
$16-4+2=$
$14+2-5=$
$14+3-7=$
$10+8-6=$
$12+5-6=$
$19-2-7=$
$16-5+8=$
$4+6+5=$
$2+8+3=$
$6+3-4=$
$5+13=$
$10-4=$
$18-10=$
$17-7=$
$2+13=$
$3+10=$
$13+0=$
$19-9=$
$14+4=$
$13-3=$
$16+1=$
$14-10=$
$12+6=$
$16-10=$
$1+10=$
$19+0=$
$10-5=$
$17+1=$
$14+3=$
$6-2=$
$16-4+2=$
$14+2-5=$
$14+3-7=$
$10+8-6=$
$12+5-6=$
$19-2-7=$
$16-5+8=$
$4+6+5=$
$2+8+3=$
$6+3-4=$
答案
1.18
2.6
3.8
4.10
5.15
6.13
7.13
8.10
9.18
10.10
11.17
12.4
13.18
14.6
15.11
16.19
17.5
18.18
19.17
20.4
21.14
22.11
23.10
24.12
25.11
26.10
27.19
28.15
29.13
30.5
2.6
3.8
4.10
5.15
6.13
7.13
8.10
9.18
10.10
11.17
12.4
13.18
14.6
15.11
16.19
17.5
18.18
19.17
20.4
21.14
22.11
23.10
24.12
25.11
26.10
27.19
28.15
29.13
30.5
二、算一算,填一填。

答案
1.16
2.17
3.11
4.19
5.13
6.11
7.8
8.14
9.13
10.12
11.19
12.13
13.16
14.17
15.18
2.17
3.11
4.19
5.13
6.11
7.8
8.14
9.13
10.12
11.19
12.13
13.16
14.17
15.18
登录