Adding & Subtracting in Scientific Notation

Adding

100

2 x 10^6 + 4 x 10^6

6 x 10^6

200

9 x 10^3 + 8 x 10^3

1.7 x 10^4

300

4.61`x 10^2 + 1.46 x 10^3

1.921 x 10^3

400

6.1 x 10^5 + 4.1 x 10^4

6.51 x 10^5

500

9.5 x 10^6 + 4 x 10^7

4.95 x 10^7

Subtracting

100

9 x 10^8 - 4 x 10^8

5 x 10^8

200

6 x 10^4 - 4 x 10^4

2 x 10^4

300

4 x 10^3 - 3 x 10^2

3.7 x 10^3

400

6 x 10^4 - 4 x 10^3

5.6 x 10^4

500

34.6 x 10^3 - 3.1 x 10^4

0.36 x 10^4

Random

100

.5 x 10^7 + 9 x 10^7

9.5 x 10^7

200

6 x 10^3 + .9 x 10^3

6.9 x 10^3

300

9 x 10^4 - 7 x 10^3

8.3 x 10^4

400

4.5 x 10^2 + 7.5 x 10^3

7.95 x 10^3

500

65 x 10^4 - 4 x 10^5

2.5 x 10^5