1.10 - 9 =9 - 4 =7 - 4 =11 - 7 =11 - 3 =
2.3 - 1 =9 - 8 =10 - 3 =12 - 4 =10 - 6 =
3.8 - 1 =9 - 3 =5 - 2 =6 - 5 =7 - 5 =
4.9 - 5 =14 - 6 =11 - 6 =13 - 6 =13 - 7 =
5.16 - 8 =16 - 8 =5 - 0 =15 - 7 =8 - 3 =
6.7 - 2 =9 - 9 =7 - 0 =8 - 2 =13 - 7 =
7.11 - 3 =9 - 9 =8 - 3 =17 - 8 =12 - 8 =
8.15 - 8 =8 - 4 =4 - 1 =5 - 3 =9 - 0 =
9.12 - 9 =7 - 0 =4 - 2 =10 - 4 =14 - 6 =
10.12 - 6 =9 - 2 =6 - 4 =12 - 3 =5 - 4 =
11.6 - 4 =12 - 7 =5 - 4 =14 - 9 =11 - 7 =
12.10 - 1 =15 - 9 =9 - 5 =6 - 1 =15 - 8 =
13.10 - 2 =10 - 2 =9 - 4 =15 - 6 =12 - 5 =
14.10 - 7 =2 - 1 =15 - 7 =9 - 3 =14 - 7 =
15.8 - 1 =16 - 7 =5 - 0 =8 - 4 =11 - 5 =
16.11 - 8 =11 - 2 =8 - 6 =9 - 1 =10 - 5 =
17.10 - 7 =12 - 6 =13 - 8 =18 - 9 =10 - 5 =
18.12 - 7 =7 - 2 =13 - 5 =12 - 9 =5 - 1 =
19.17 - 8 =7 - 5 =15 - 6 =10 - 8 =4 - 1 =
20.13 - 9 =10 - 6 =10 - 9 =13 - 9 =12 - 8 =

answers to this test: jakeholland.net/multest.php?vals=0-9&op=sub&seed=643544704&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