Question

Find the number in standard form for the following expansions:

8 × 10⁴ + 7 × 10³ + 6 × 10² + 5 × 10¹ + 2 × 1 + 4 × 10⁻² + 7 × 10⁻⁴ 

Answer 1

8 × 10⁴ + 7 × 10³ + 6 × 10² + 5 × 10¹ + 2 × 1 + 4 × 10⁻² + 7 × 10⁻⁴ 

= 8 × 10⁴ + 7 × 10³ + 6 × 10² + 5 × 10¹ + 2 × 1 + 4 × 10⁻² + 7 × 10⁻⁴ 

= `8 xx 1000+ 7 xx 1000 + 6 xx 100 + 5 xx 10 + 2 xx 1 + 4 xx 1/100 + 7 xx 1/10000`

= `80000 + 7000 + 600 + 50 + 2 + 4/100 + 7/10000`

= 87652.0407