plsss answer this i will brain liest who can answer this

Answer:
1.
[tex]3.9 \div 37.791 = 39. \div 377.91 =10.7974285714[/tex]
If you are dividing a decimal move the decimal point to the right. Like, 3.9÷37.791 turn into 39.÷377.791
2. 1.8×0.8= 1.44
3. 20.40+18.47= 38.87
4. 2÷20=10
5. 10+9.5=19.5
6. 3.611×4.5=16.2495
Solution:
16.2495 ÷4.5=3.611
7.
[tex]8.6 + 38.24 + 4.392 + 447.365 = 498.597[/tex]
8. 15÷3=5
9. 15,993.9- 14,993.9= 1
10.12,337 + 2,443.4 = 14,78.4
11. 734.9 + 10=744.9
12. 2×4.7= 9.4
Step-by-step explanation:
hope it helps