Question: Express in scientific notation: (a) 0.345 (b) 0.0035 (c) 251 (d) 532.21 (e) 1.5 10 5 + 2 10 2 (f) (1.5

Express in scientific notation:

(a) 0.345 

(b) −0.0035 

(c) 251 

(d) 532.21

(e) 1.5 × 105 + 2 × 102 

(f) (1.5 × 105) × (2 × 102) 

(g) (1.5 × 105) ÷ (2 × 102)

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