Odpowiedź :
a) 1*15*100*4*24
--------------------------- = 20
6*4*1*15*25
po skroceniu niektorych liczb wyszlo 20 ;)
b)
0,4 = 2/5
1,4 = 7/5
2*7*3*1*10
------------------ = 6/10= 3/5
5*5*4*7*1
tu tez skracasz
c)
6,6= 6 3/5 = 33/5
33*9*5*8*1
----------------- = 3/10
5*40*6*11*3
tu tak samo ;)
--------------------------- = 20
6*4*1*15*25
po skroceniu niektorych liczb wyszlo 20 ;)
b)
0,4 = 2/5
1,4 = 7/5
2*7*3*1*10
------------------ = 6/10= 3/5
5*5*4*7*1
tu tez skracasz
c)
6,6= 6 3/5 = 33/5
33*9*5*8*1
----------------- = 3/10
5*40*6*11*3
tu tak samo ;)
a)
¹/₆ × 3 ³/₄ × 100 × ⁴/₁₅ × ²⁴/₂₅=
=¹/₆ × ¹⁵/₄ × 100 × ⁴/₁₅ × ²⁴/₂₅=
=¹⁵/₄× ⁴/₁₅× 100 ×¹/₆ × ²⁴/₂₅=
=100×⁴/₂₅=100×¹⁶/₁₀₀=16
b)
0,4 × 1,4 × ³/₄ × ¹/₇ × 10=
=²/₅×⁷/₅׳/₄ × ¹/₇×10=
=²/₅׳/₄×⁷/₅×¹/₇×10=
=⁶/₂₀×¹/₅×10=
=⁶/₁₀₀×10=
=⁶/₁₀=0,6
c)
6,6 × ⁹/₄₀ × ⁵/₆ × ⁸/₁₁ × ¹/₃=
=³³/₅×⁹/₄₀×⁵/₆×⁸/₁₁×¹/₃=
=³³/₅×⁵/₆×⁹/₄₀×¹/₃×⁸/₁₁=
=³³/₆׳/₄₀×⁸/₁₁=
=³³/₈₀×⁸/₁₁=
=³³/₁₁₀
¹/₆ × 3 ³/₄ × 100 × ⁴/₁₅ × ²⁴/₂₅=
=¹/₆ × ¹⁵/₄ × 100 × ⁴/₁₅ × ²⁴/₂₅=
=¹⁵/₄× ⁴/₁₅× 100 ×¹/₆ × ²⁴/₂₅=
=100×⁴/₂₅=100×¹⁶/₁₀₀=16
b)
0,4 × 1,4 × ³/₄ × ¹/₇ × 10=
=²/₅×⁷/₅׳/₄ × ¹/₇×10=
=²/₅׳/₄×⁷/₅×¹/₇×10=
=⁶/₂₀×¹/₅×10=
=⁶/₁₀₀×10=
=⁶/₁₀=0,6
c)
6,6 × ⁹/₄₀ × ⁵/₆ × ⁸/₁₁ × ¹/₃=
=³³/₅×⁹/₄₀×⁵/₆×⁸/₁₁×¹/₃=
=³³/₅×⁵/₆×⁹/₄₀×¹/₃×⁸/₁₁=
=³³/₆׳/₄₀×⁸/₁₁=
=³³/₈₀×⁸/₁₁=
=³³/₁₁₀
