1. EASY

\(1.5 - 0.5= \)

 
2. EASY

\(2.5 - 2.1= \)

 
3. EASY

\(3.7 - 1.1= \)

 
4. MEDIUM

\(7.23 - 5.05= \)

 
5. MEDIUM

\(3.46 - 2.39= \)

 
6. MEDIUM

\(2.4 - 1.97= \)

 
7. MEDIUM

\(5.3012 - 3.01= \)

 
8. HARD

\(25.325 - 6.66= \)

 
9. HARD

\(252.3999 - 1.701= \)

 
10. HARD

\(6.08352 - 2.9592= \)