Adding Numbers in Scientific Notation

Find the Sum. 4.2 × 10 4 +(6.5 × 10 4 )

Answer 1.07 × 10 5

Find the Sum 6.5 × 10 5 +( 3.9× 10 6 )

Answer 4.55× 10 6

Find the Sum. 7.3 × 10 5 +(3.2× 10 2 )

Answer (note – exponent should be 5 not 3) (7.3032× 10 3 )

Find the sum 3.51 × 10 5 +(8.132 × 10 5 )

Answer (1.1642 × 10 6 )

Find the Sum 5.67 ×10 6 +(3.46× 10 4 )

Answer (5.7046× 10 6 )

Find the sum. 6.82× 10 3 +(2.345× 10 5 )

Answer (2.4132× 10 5 )

Find the Sum 1.132× 10 7 +(2.23× 10 4 )

Answer (1.13423× 10 7 )

Find the difference 7.34× 10 4 −(2.3× 10 4 )

Answer (5.04× 10 4 )

Find the Difference 4.245× 10 7 −(1.35× 10 7 )

Answer (2.895× 10 7 )