Select the skills to practice
To 5
\(2 + \square = 5\)
To 10
\(6 + \square = 10\)
To 20
\(12 + \square = 20\)
To 50
\(22 + \square = 50\)
To 100
\(17 + \square = 100\)
To 200
\(125 + \square = 200\)
To 1000
\(653 + \square = 1000\)
To 10,000
\(1253 + \square = 10000\)
Timer (Optional)
1:00
1:00
