Who can help solve the mathematical oral calculation problem of addition, subtraction, multiplication and division of decimal points within 200 10?

3.2+5.6=? 5.2*2.6=? 1.2+6.5+2.7=? 5.8*8.5=? 6.4+5.8=?

1.3+9.8=? 4.5+9.8=? 1.3+4.5=? 5.5+6.6=? 9.9-2. 1=?

6.3/2. 1=? 8.4/7=? 9. 1-2.4=? 3.7*2=? 6.3+3.6=?

1.8*5=? 5.3+9.8=? 5.6-4.5=? 2. 1*9=? 5.5*2=?

2.3*7=? 2.8/7=? 3.6/6=? 7.2/3.6=? 2.5*4=?

4.5*3=? 7.5*3=? 7.5+8=? 8/ 1.6= 5.2+4.8=?

7.2/3=? 2.4*4=? 0.9+9. 1=? 0.8*5=? 5.5*6=?

6.4+5.4=? 8.5+6.3=? 2.5+3.8-7.2+5.4=? 1.3*7+ 1.3*3=?

2.5* 1+2.5+3=? 3../9+ 1.8/2=? 2.7+3.5+ 1.4+2.8=? 1.4*9- 1.4*4=?

5.7+3.6-5.7- 1.6=? 5.4+4.5=? 9.9+ 1=? 2.4*5+8=? 2.5*6+2=?

4.5*2-9=? 2.3*3-6.=? 2.5*9+2.5=? 2.5*9-2.5=? 2.5*8=?

4.5+4.5-9=? 4.2-7+3.8=? 2.8-7+5.2=? 6.3+3.6=? 1.6*4=?

3.8+2.4-2.4+3.8=? 2.5*7-2.5*3=? 1.5*3-4.5=? 1.8*3- 1.2? 3*9-3.5*8=?