1.9 + 7 =5 + 7 =8 + 7 =9 + 2 =0 + 0 =
2.1 + 9 =9 + 4 =1 + 3 =7 + 0 =3 + 3 =
3.8 + 0 =4 + 8 =1 + 4 =8 + 8 =8 + 3 =
4.6 + 7 =5 + 6 =4 + 2 =2 + 9 =1 + 6 =
5.3 + 6 =2 + 5 =9 + 3 =1 + 7 =7 + 6 =
6.4 + 3 =9 + 1 =2 + 2 =7 + 3 =4 + 8 =
7.7 + 7 =4 + 7 =3 + 4 =1 + 5 =5 + 3 =
8.7 + 5 =9 + 5 =3 + 3 =6 + 1 =8 + 8 =
9.9 + 0 =2 + 6 =3 + 5 =5 + 7 =6 + 6 =
10.7 + 7 =8 + 6 =3 + 4 =2 + 3 =6 + 9 =
11.6 + 4 =5 + 4 =3 + 9 =2 + 3 =2 + 4 =
12.2 + 2 =8 + 6 =4 + 6 =8 + 4 =7 + 8 =
13.2 + 7 =8 + 9 =5 + 9 =1 + 2 =9 + 4 =
14.4 + 9 =6 + 3 =9 + 6 =5 + 6 =3 + 2 =
15.5 + 5 =2 + 8 =2 + 8 =6 + 1 =5 + 4 =
16.3 + 6 =1 + 9 =5 + 8 =5 + 2 =9 + 9 =
17.0 + 7 =6 + 5 =5 + 8 =2 + 7 =4 + 3 =
18.9 + 3 =2 + 1 =8 + 5 =4 + 1 =1 + 8 =
19.7 + 1 =4 + 4 =2 + 4 =5 + 5 =4 + 6 =
20.3 + 1 =9 + 6 =8 + 4 =6 + 6 =6 + 2 =

answers to this test: jakeholland.net/multest.php?vals=0-9&op=add&seed=1694707046&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