Question

Zad.1
A) 3/4 - 3/2+(2 1/2- 1 7/8):1/8- 2 1/4
B)1/2+(4/5- 1 1/2:2 1/2) :2/5
C) 5/8+ 3/2 *(19/4:19)+ 3 3/4:5/6 - 1/2
D)(1 1/2+ 2 2/3) : 5/6 -(3 1/3- 1 1/4): 2 1/12
E) 8: ( - 1 3/5) - (4 1/2 * 1 2/3 - 3 3/4)
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1/2 * 2 1/2

F)1/2 - 2/5 :(1 2/3 - 2 1/5)
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2/3 * 1 1/2 - 3/4

G) (2/3* 2,7 - 7/15:1/3): 1/25 * (3/4-1/6)
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8/15+ 0,3

H) (1/5 + 1,3) : 3/2 - (18 3/4- 4,95) : 2 3/10
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1 1/5: 0,6 - 2 2/5 * 1,25
i) ( 1 1/3 + 1 2/3 * 1,2) : 1 2/3-( 1,75 : 1 1/8 - 2 1/3 : 5,25) * 0,9
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( 5 5/6 - 5,5) * 0,3

J) ( 10- 2 1/2) : 1,5 - 1,75 *(2 2/7 - 5 6/7)
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2,25 * (2,5 - 2 1/4)

K) (16,5 - 13 7/9) * 18/33 + 2 1/5 * (8/33 - 1/11) + 2/11
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( 6 3/4 + 5,5) * 1/7 - 3/4

Answer 1

A) 3/4 - 3/2+(2 1/2- 1 7/8):1/8- 2 1/4 = 3/4 - 3/2 + 5/8 : 1/8 -2 1/4 = 3/4 - 3/2 + 5 - 2 1/4 = 2

B)1/2+(4/5- 1 1/2:2 1/2) :2/5 = 1/2 - 1/5 : 2/5 = 0

C) 5/8+ 3/2 *(19/4:19)+ 3 3/4:5/6 - 1/2 = 5/8 + 3/2*1/4 + 4 1/2 - 1/2 = 5/8 + 3/8 + 4 1/2 - 1/2 = 5

D)(1 1/2+ 2 2/3) : 5/6 -(3 1/3- 1 1/4): 2 1/12 = 4 1/6 : 5/6 - 2 1/2 : 2 1/12 = 5 - 1 = 4

E) 8: ( - 1 3/5) - (4 1/2 * 1 2/3 - 3 3/4) = -5 - 3 3/4 = - 8 3/4
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2/3 * 1 1/2 - 3/4 = 1-3/4 = 1/4

F)1/2 - 2/5 :(1 2/3 - 2 1/5) = 1/2 - 2/5 : (- 8/15) = 1/2 + 3/4 = 1 1/4
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2/3 * 1 1/2 - 3/4 = 1-3/4=1/4

G) (2/3* 2,7 - 7/15:1/3): 1/25 * (3/4-1/6) = ( 1,7(9) - 1 2/5) : 1/25 * 7/12 = 0,3(9) : 1/25 * 7/12 = 5,8333318 ~ 5,83
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8/15+ 0,3 = 0,8(3)

H) (1/5 + 1,3) : 3/2 - (18 3/4- 4,95) : 2 3/10 = 1,5 : 3/2 - 13,8 : 2 3/10 = 1 - 6 = -5
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1 1/5: 0,6 - 2 2/5 * 1,25 = 2 - 3 = -1
i) ( 1 1/3 + 1 2/3 * 1,2) : 1 2/3-( 1,75 : 1 1/8 - 2 1/3 : 5,25) * 0,9 = ( 1 1/3 + 1,(9)): 1 2/3-(1,(5)-0,(4))* 0,9 = 3,3333332:1 2/3 - 1,(1)*0,9 = 1,(9) - 0,(9) = 1

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( 5 5/6 - 5,5) * 0,3 = 0,(3)*0,3 = 0,0(9)

J) ( 10- 2 1/2) : 1,5 - 1,75 *(2 2/7 - 5 6/7) = 7 1/2 : 1,5 - 1,75 * (-3 4/7) = 5 - (-6,24(9)) = 5 + 6,24(9) = 11,24(9)
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2,25 * (2,5 - 2 1/4) = 2,25 * 0,25 = 0,5625

K) (16,5 - 13 7/9) * 18/33 + 2 1/5 * (8/33 - 1/11) + 2/11 = 2,7(2)*18/33 + 2 1/5*5/33+2/11 = 1,(48)+1/3+2/11= 1,(9)
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( 6 3/4 + 5,5) * 1/7 - 3/4 = 12,25 * 1/7 - 3/4 = 20,825 -3/4 = 20,075

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