19×36-36×9
2800÷25÷4
1.29+3.7+0.71+6.3
23.4-8.54-1.46
385×101
125×48
9.9÷(1.1-0.9)
5.4×6.7+3.3×5.4
39÷1.25÷8
①0.175÷(0.25×4)
②4.2+5.8÷0.16
③(4.32-0.64)÷0.23
④2.1÷3.5÷0.2
①250-250÷25×2
②18÷ ×
③5.2÷0.4÷2.5
④(34- )÷17
⑤4.3×1.75-1.75+ ×6.7
⑥ ×[(72.8-69.6)÷ ]