Question

a.[3+(2x2x2:8-1)-(7x4:2-13)]:2=

b.6-[(5+37)-(5+12:6)]:7+3:3-4:4=

c.99+5x[6x2+2x(7x8-3x10:5):10]-76=

d.5+6:[3x(40-13x3)-(88-5x17):3]x3=

e.200+240:2+[68:2+4x(19+12+19)]=

Va rog rezolvati in linie pas cu pas si dau Coroana Rezolvare clasa a-4

Answer 1

Răspuns

Explicație pas cu pas:

a)  

[ 3 + ( 2 x 2 x 2 : 8 - 1 ) - ( 7 x 4 : 2 - 13 ) ] : 2 = 1

= [ 3 + ( 8 : 8 - 1 ) - ( 28 : 2 - 13 ) ] : 2 =

= [ 3 + ( 1 - 1 ) - ( 14 - 13 ) ] : 2 =

= ( 3 + 0 - 1 ) : 2 =

= 2 : 2 =

= 1

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b)

6 - [ ( 5 + 37 ) - ( 5 + 12 : 6 ) ] : 7 + 3 : 3 - 4 : 4 = 1

= 6 - [ 42 - ( 5 + 2 ) ] : 7 + 1 - 1 =

= 6 - ( 42 - 7 ) : 7 + 1 - 1 =

= 6 - 35 : 7 + 1 - 1 =

= 6 - 5 + 1 - 1 =

= 1 + 1 - 1 =

= 1

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c)

99 + 5 x [ 6 x 2 + 2 x ( 7 x 8 - 3 x 10 : 5 ) : 10 ] - 76 = 133

= 99 + 5 x [ 12 + 2 x ( 56 - 30 : 5 ) : 10 ] - 76 =

= 99 + 5 x [ 12 + 2 x ( 56 - 6 ) : 10 ] - 76 =

= 99 + 5 x ( 12 + 2 x 50 : 10 ) - 76 =

= 99 + 5 x ( 12 + 100 : 10 ) - 76 =

= 99 + 5 x ( 12 + 10 ) - 76 =

= 99 + 5 x 22 - 76 =

= 99 + 110 - 76 =

= 209 - 76 =

= 133

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d)

5 + 6 : [ 3 x ( 40 - 13 x 3 ) - ( 88 - 5 x 17 ) : 3 ] x 3 = 14

= 5 + 6 : [ 3 x ( 40 - 39 ) - ( 88 - 85 ) : 3 ] x 3 =

= 5 + 6 : ( 3 x 1 - 3 : 3 ) x 3 =

= 5 + 6 : ( 3 - 1 ) x 3 =

= 5 + 6 : 2 x 3 =

= 5 + 3 x 3 =

= 5 + 9 =

= 14

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e)  

200 + 240 : 2 + [ 68 : 2 + 4 x ( 19 + 12 + 19 ) ] = 554

= 200 + 120 + ( 34 + 4 x 50 ) =

= 320 + ( 34 + 200 ) =

= 320 + 234 =

= 554