Answer:
1. 7×10=70
2. 86×10=860
3. 830=3 tens
5. 6 tens=960
6. 10×61=610
7. 830×10=8300
8. 1080= 8 tens
9. 61×10=610
10. 100×10=1000
11. 79×10=790
12. 0 tens= 3700
13. 340= 4 tens
14. 358×10=3580
9
Step-by-step explanation:
that no. is 20
let us take that certain no. as x
so
2/5. x +2=10
2x/5 = 10-2
2x = 8×5
x= 40/2
x= 20
-39
