1.9 - 8 =18 - 9 =14 - 6 =8 - 8 =7 - 6 =
2.10 - 7 =0 - 0 =1 - 0 =13 - 5 =12 - 3 =
3.17 - 9 =6 - 5 =7 - 5 =10 - 9 =15 - 7 =
4.0 - 0 =12 - 5 =13 - 4 =5 - 4 =9 - 3 =
5.12 - 3 =10 - 4 =17 - 8 =5 - 0 =8 - 1 =
6.13 - 6 =11 - 8 =1 - 1 =9 - 2 =16 - 7 =
7.15 - 8 =11 - 7 =9 - 8 =9 - 4 =7 - 0 =
8.8 - 2 =5 - 3 =8 - 2 =6 - 4 =9 - 7 =
9.14 - 9 =5 - 2 =9 - 5 =6 - 4 =7 - 4 =
10.6 - 2 =17 - 8 =10 - 5 =5 - 4 =7 - 2 =
11.5 - 2 =9 - 1 =13 - 9 =16 - 8 =18 - 9 =
12.14 - 9 =9 - 5 =16 - 9 =8 - 6 =11 - 3 =
13.3 - 1 =10 - 8 =2 - 1 =10 - 8 =15 - 9 =
14.8 - 7 =11 - 5 =9 - 3 =15 - 8 =11 - 9 =
15.16 - 9 =14 - 8 =10 - 6 =11 - 5 =8 - 1 =
16.4 - 0 =6 - 1 =7 - 3 =13 - 8 =12 - 7 =
17.8 - 4 =13 - 4 =7 - 6 =11 - 9 =10 - 3 =
18.11 - 2 =12 - 4 =17 - 9 =13 - 6 =10 - 7 =
19.14 - 5 =7 - 5 =5 - 3 =8 - 3 =11 - 4 =
20.16 - 7 =15 - 7 =9 - 2 =12 - 8 =12 - 9 =

answers to this test: jakeholland.net/multest.php?vals=0-9&op=sub&seed=1421942893&answer

random multiplication test: /multest.php?vals=0-9&op=mul
random division test: /multest.php?vals=0-9&op=div
random addition test: /multest.php?vals=0-9&op=add
random subtraction test: /multest.php?vals=0-9&op=sub