Explanation:
3.4000x 10-6 +5.7000x 10-3
[tex]3.4000 \times {10}^{ - 6} = 3.4 \times {10}^{ - 6} [/tex]
[tex]5.7000 \times {10}^{ - 3} = 5700 \times {10}^{ - 6} [/tex]
now we can add them
[tex]3.4 + 5700 = 5703.4 \\ = 5703.4 \times {10}^{ - 6} [/tex]
[tex] = 5.7034 \times {10}^{ - 3} [/tex]
