Question

1.Wykonaj Działanie: 1/5 to w ułamku / zajmuje kreske ułamkową

b) 0,9:1/5+1/3-3/5

d)2i 1/7*1,6*2 1/3

f)6i 2/3*(0,25+1/5)

h)3i 1/3-1/3*0,6

j)4,5*5i 5/9+6,4*3/8

2. wykonaj działanie

(5/6+1/3) : (2i2/3 -1,75

17/40 -0,2

-------------

1i3/5

(3i3/5-2)*5

---------------

0,04

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Answer 1

b) 0,9:1/5+1/3-3/5 = 9/10 * 5 + 5/15 - 9/15 = 9/2 - 4/15 = 135/30 - 8/30 = 127/30 = 4 i 7/30 

d)2i 1/7*1,6*2 1/3 = 15/7 * 16/10 * 7/3 = 3/7 * 16/2 * 7/3  = 1 * 16/2 * 1 = 8

f)6i 2/3*(0,25+1/5) = 20/3 * (25/100 + 20/100) = 20/3*45/100 = 1 * 15/5 = 3

h)3i 1/3-1/3*0,6 = 10/3 - 1/3*6/10 = 10/3 - 2/10 = 100/30 - 6/30 = 94/30 = 3 i 2/15

j)4,5*5i 5/9+6,4*3/8 = 45/10  * 50/9 + 64/10*3/8 = 25 + 8/10 * 3 = 25 + 24/10 = 250/10 + 24/10 = 274/10 = 27 i 2/5

 

2. wykonaj działanie

 

(5/6+1/3) : (2i2/3 -1,75) = (5/6 + 2/6) : (6/3 - 175/100) = 7/6 : (6/3 - 7/4) = 7/6 : (24/12 - 21/12) = 7/6 : 3/12 = 7/6 * 4 = 14/3 

 

 

 17/40 -0,2

-------------     = (17/40 - 2/10) : 8/5 = (17/40 - 8/40) * 5/8 = 9/40 * 5/8 = 9/8 * 1/8 = 9/64

    1i3/5

 

 (3i3/5-2)*5

--------------- = [(18/5 - 10/5) * 5] : 4/100 = (8/5 * 5) * 100/4 = 8 * 25 = 200

     0,04

 

Answer 2

) 0,9:1/5+1/3-3/5=9/10*5/1 +5/15-9/15=9/2-4/15=135/30-8/30=127/30=4 7/30

d)2i 1/7*1,6*2 1/3=15/7*16/10*7/3=240/48=5

f)6i 2/3*(0,25+1/5)=20/3*(25/100 +20/100)=20/3*45/100=90/=156

h)3i 1/3-1/3*0,610=10/3-1/3*61/100=10/3-61/300=1000/300-61/300=939/61=15 24/300=15 6/75

j)4,5*5i 5/9+6,4*3/8=45/10*50/9 +64/10 * 3/8=25+24/10=27+4/10=27 2/5

 

2. wykonaj działanie

 

(5/6+1/3) : (2i2/3 -1,75)=(5/6 +2/6): (8/3-175/100)=8/6:(24/300 -525/300)=8/6:501/300=2004/900=2 204/900=2 51/225

 

 

 17/40 -0,2   17/40-2/10      17/40-8/40         

-------------=................= ------------------=     9/40:8/5=9/40*5/8=9/64

    1i3/5         8/5                 8/5                     

 

 (3i3/5-2)*5      (1 3/5)*5      8/5 *5        40/5

---------------=---------------= ----------= -----------=8: 1/25=8/1*25/1=200

 

     0,04              4/100         4/100           1/25

 

 

dziki i poprosze o dobre rozwionzania :) z góry dzieki