Explications étape par étape :
A = 10⁷X10⁻⁵ = 10⁷⁺⁽⁻⁵⁾ = 10²
B = (10³)⁻² = 10⁻⁶
C = 10⁹/10⁻⁴ = 10⁹⁻⁽⁻⁴⁾ = 10¹³
D = 10⁻⁴x 10⁻² = 10⁻⁴⁺⁽⁻²⁾ = 10⁻⁶
E= (10⁻²)⁻⁵ = 10⁻² ˣ ⁻⁵ = 10¹⁰
F= 10³/10⁷ = 10³⁻⁷ = 10⁻⁴
G = (10⁻⁵)² / 10⁷x 10⁻³ = 10⁻¹⁰ / 10⁴ = 10⁻¹⁴
H = 10⁻⁷x 10⁻¹³ / (10⁵)³ = 10⁻²⁰ / 10¹⁵ = 10⁻²⁰⁻¹⁵ = 10⁻³⁵
1)
a)
4,8 x10⁶ = 4 800 000
b)
0,86 x 10⁻⁵ = 0, 0 000 086
c)
0,037x10⁵
3 700
d)
680x10⁻⁶ = 0, 000 680
2)
9 450 000 000 000 = 9,45.10¹²
350 000 000 = 3,5.10⁸
0,000 000 0067 = 6,7.10⁻⁹
0,000 009 = 9.10⁻⁶
e)
4500x10⁶ = 4,5.10³.10⁶ = 4,5.10⁹
f)
0,013x10⁻³ = 1,3.10⁻².10⁻³ = 1,3.10⁻⁵
g)
62x10⁻⁸ = 6,2.10¹.10⁻⁸ = 6,2.10⁻⁷
h)
24 x 10⁻⁸ x 42 x 10² / 32 (10⁻⁵)³
63 x 10⁻⁸ x 10² / 2 x 10⁻¹⁵
63 x 10⁻⁶ / 2 x 10⁻¹⁵
63/2 x 10⁹
31,5 x 10⁹
3,15 x 10¹⁰
En espérant t'avoir aidé ...
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Explications étape par étape :
A = 10⁷X10⁻⁵ = 10⁷⁺⁽⁻⁵⁾ = 10²
B = (10³)⁻² = 10⁻⁶
C = 10⁹/10⁻⁴ = 10⁹⁻⁽⁻⁴⁾ = 10¹³
D = 10⁻⁴x 10⁻² = 10⁻⁴⁺⁽⁻²⁾ = 10⁻⁶
E= (10⁻²)⁻⁵ = 10⁻² ˣ ⁻⁵ = 10¹⁰
F= 10³/10⁷ = 10³⁻⁷ = 10⁻⁴
G = (10⁻⁵)² / 10⁷x 10⁻³ = 10⁻¹⁰ / 10⁴ = 10⁻¹⁴
H = 10⁻⁷x 10⁻¹³ / (10⁵)³ = 10⁻²⁰ / 10¹⁵ = 10⁻²⁰⁻¹⁵ = 10⁻³⁵
1)
a)
4,8 x10⁶ = 4 800 000
b)
0,86 x 10⁻⁵ = 0, 0 000 086
c)
0,037x10⁵
3 700
d)
680x10⁻⁶ = 0, 000 680
2)
a)
9 450 000 000 000 = 9,45.10¹²
b)
350 000 000 = 3,5.10⁸
c)
0,000 000 0067 = 6,7.10⁻⁹
d)
0,000 009 = 9.10⁻⁶
e)
4500x10⁶ = 4,5.10³.10⁶ = 4,5.10⁹
f)
0,013x10⁻³ = 1,3.10⁻².10⁻³ = 1,3.10⁻⁵
g)
62x10⁻⁸ = 6,2.10¹.10⁻⁸ = 6,2.10⁻⁷
h)
24 x 10⁻⁸ x 42 x 10² / 32 (10⁻⁵)³
63 x 10⁻⁸ x 10² / 2 x 10⁻¹⁵
63 x 10⁻⁶ / 2 x 10⁻¹⁵
63/2 x 10⁹
31,5 x 10⁹
3,15 x 10¹⁰
En espérant t'avoir aidé ...