1.0 + 8 =2 + 2 =4 + 7 =6 + 5 =4 + 3 =
2.1 + 7 =1 + 5 =5 + 1 =7 + 5 =9 + 9 =
3.4 + 6 =6 + 7 =7 + 6 =8 + 9 =2 + 9 =
4.6 + 5 =5 + 7 =8 + 7 =4 + 6 =4 + 7 =
5.7 + 1 =2 + 0 =6 + 1 =2 + 7 =1 + 2 =
6.2 + 4 =8 + 1 =7 + 9 =8 + 5 =5 + 4 =
7.2 + 6 =5 + 1 =9 + 9 =3 + 9 =2 + 0 =
8.4 + 8 =2 + 7 =8 + 6 =4 + 2 =7 + 2 =
9.6 + 8 =8 + 4 =3 + 5 =2 + 5 =9 + 6 =
10.9 + 1 =7 + 4 =2 + 3 =2 + 5 =6 + 8 =
11.3 + 1 =7 + 5 =2 + 8 =5 + 6 =1 + 2 =
12.8 + 8 =9 + 3 =9 + 5 =3 + 6 =5 + 8 =
13.1 + 8 =1 + 7 =7 + 6 =9 + 7 =7 + 3 =
14.6 + 9 =1 + 3 =3 + 5 =6 + 6 =5 + 5 =
15.2 + 4 =5 + 3 =1 + 5 =1 + 6 =3 + 4 =
16.1 + 9 =6 + 4 =4 + 4 =9 + 2 =4 + 9 =
17.3 + 7 =8 + 7 =4 + 5 =4 + 1 =3 + 9 =
18.3 + 2 =5 + 7 =1 + 8 =5 + 0 =8 + 4 =
19.8 + 5 =7 + 2 =8 + 2 =2 + 2 =6 + 3 =
20.9 + 6 =9 + 5 =9 + 2 =9 + 4 =6 + 1 =

answers to this test: jakeholland.net/multest.php?vals=0-9&op=add&seed=540733641&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