OPERATIONS ON DECIMAL NUMBERS
Prepared by
Ramakrishna Surampudi
1. 90 * 90 = ?
81000
81
8.1
810
8100
2. 90 * 9 = ?
81000
81
8.1
810
8100
3. 900 * 9 = ?
81000
810
8100
81
8.1
4. 9 * 9 = ?
810
81
8100
81000
8.1
5. 90 * 900 = ?
81000
8100
810
81
8.1
6. 900 * 900 = ?
810000
81000
8100
810
81
7. 9 * 0.9 = ?
81
8.1
0.81
810
8100
8. 90 * 0.9 = ?
8100
810
81
8.1
0.81
9. 900 * 0.9 = ?
81000
8100
81
810
8.1
10. 0.9 * 0.9 = ?
8100
810
81
8.1
0.81
11. 0.09 * 0.09 = ?
81
8.1
0.81
0.0081
0.081
12. 0.09 * 0.9 = ?
0.81
0.0081
0.081
81
810
13. 9 * 0.09 = ?
0.081
0.81
0.0081
8.1
81
14. 0.09 * 90 = ?
8.1
0.81
0.081
0.0081
81
15. 900 * 0.09 = ?
810
0.0081
0.81
8.1
81
16. 0.9 + 9.009 = ?
9.999
9.909
9.990
9.099
9.009
17. 0.9 - 0.09 = ?
0.01
0.99
0.81
0.1
0.90
18. 9.9 - 0.9 = ?
9.99
0.09
0.9
9
9.09
19. 9.09 - 0.9 = ?
8.89
8.99
9.89
9.19
8.19
20. 90.009 + 9.09 = ?
99.099
99.99
99.909
99.999
99.009
21. 99.9 + 9.9 = ?
198.9
99.99
109.8
108.9
999.99
22. 99 * 0.01 = ?
0.909
0.99
9.9
0.099
99
23. 999 * 0.1 = ?
99.9
9.99
0.999
999
0.0999
24. 99.9 * 0.1 = ?
0.0999
0.999
999
99.9
9.99
25. 9.9 * 10 = ?
990
0.099
9.9
99
0.99