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A = 0.235 x 10 ⁻¹ x 20 x 10 ⁻³
= 4.7 x 10 ⁻⁴
= 0.000 47
B = 3 x 11 x 10 ⁻² x 10 ⁶ : 500
= 33 x 10 ⁴ : 500
= 330 000 : 500
= 660
= 6.6 x 10 ²
C = 3 x 1.2 x 10² x ( 10 ⁻³) ⁴ : 0.2 x 10 ⁻⁷
= 3.6 x 10 ² x 10 ⁻¹² : 0.2 x 10 ⁻⁷
= 3.6 x 10 ⁻¹⁰ : 0.2 x 10 ⁻⁷
= 18 x 10 ⁻³ = 0.018
= 1.8 x 10 ⁻²
D = 46 x 10 ⁶ : 2 x 10 ²
= 23 x 10 ⁴
= 230 000
= 2.3 x 10 ⁵
A = 47 000 000 x 10 ⁻⁵ = 4.7 x 10 ⁷ x 10 ⁻⁵ = 4.7 x 10 ² = 470
B = 16 x 3 x 10 ⁻¹ : 24 x 10 ⁻³
= 48 x 10 ⁻¹ : 24 x 10 ⁻³
= 2 x 10 ² = 200
A = 4.7 milliers de millions = 4.7 x 10 ³ x 10 ⁶ = 4.7 x 10 ⁹
= 4 700 000 000
B = 2 x 11 x 3 x 10 ⁻³ = 66 x 10 ⁻³= 0.066 = 6.6 x 10 ⁻²
C = 96 x 5 x 10 ⁻⁶ : 6 x 10 ⁻⁷
= 480 x 10 ⁻⁶ : 6 x 10 ⁻⁷
= 80 x 10 = 800
= 8 x 10²
D = 11.5 x 10 ⁻³ : 0.5 x 10 ⁻⁵
= 23 x 10 ² = 2300
= 2.3 x 10 ³
A = 115 x 10 ⁵ : 5 x 10 ⁶
= 23 x 10 ⁻¹ = 2.3
= 2.3 x 10 ⁰
B = 66 x 10 ³ x 10 ⁻⁵ = 66 x 10 ⁻² = 0.66 = 6.6 x 10 ⁻¹
C = 48 x 10 ¹⁴ : 3 x 10 ¹¹
= 16 x 10 ³ = 16 000
= 1.6 x 10 ⁴
D = 5 x 47 x 2 x 10 ⁻⁶ x 10 ⁻² x 10
= 470 x 10 ⁻⁷
= 4.70 x 10 ⁻⁵
= 0.000047
E = 22.5 x 10 ² : 15 x 10 ⁻⁴
= 1.5 x 10 ⁶
= 1 500 000
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