Question

Numbers to add

5 x 103 - 5 x 102
5 x 104- 5 x 102
5 x 105 - 5 x 102
5x 104 - 5 x 103
5 x 105 - 5 x 10
5 x 106 - 5 x 103
4 x 103 - 3.1 x 102
4.1 x 103 - 3.1 x 102
5 x 10-2 - 5 x 10-3
5 x 102 - 5 x 10-1

Answer 1

1. 5

2. 10

3. 15

4. 5

5. 475

6. 15

7. 479/5

8. 479/5

9. -5

10. 459

Explanation:

you multiply them and then subtract.