multiply mentally math pls math the number

Answer:
1)0.053
2)213
3)0.12
4)0.019
5)0.43
6)16
7)0.0618
8)358
9)0.865
10)1.42
Answer:
1. 0.053
2. 2,130
3. O.12
4. 0.019
5. 0.43
6. 16
7. 0.0618
8. 358
9. 0.865
10. 1.42