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Calculează respecdant regurile învățate
a)12x10:4+(190-30):8+(202:2+33x3):100
b)(9x7+7x8)x4-(404:4+44:4):2
c)1000-(250:3+25x3)x3-(25+15x5)x4
d)23x(157-25x6)-477:3-(22+220:2)
e)135+5000:(2385-385)+3x(40+8:2)
f)36+0(125x25-25x25)+33x3-33:33+33:
g)909-909x(102-909:9+0:1)-99x(9x9:9-9)
h)3x(6-6:2)+305:5+(100:5+8x5x0):5
I)138+(27:3-1)x2:8-2x(100-195:15)x2
î)7+7:7x(7-7:7)x7:7
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Răspuns :

Ru10id

a)12×10:4+(190-30):8+(202:2+33×3):100=52

1)12×10:4=120:4=30

2)(190-30):8=160:8=20

3)(202:2+33×3):100=(101+99):100=200:100=2

4)30+20+2=52

b)(9×7+7×8)×4-(404:4+44:4):2=392

1)(9×7+7×8)×4=(63+56)×4=112×4=448

2)(404:4+44:4):2=112:2=56

3)448-56=392

c)1000-(250:3+25×3)×3-(25+15×5)×4=-276

1)1000-(250:3+25×3)×3=1000(83.(3)+75)×3=1000-(158.(3))×3=1000-474.(9)=524

2)(25+15×5)×4=(40×5)×4=200×4=800

3)524-800=-276

d)23×(157-25×6)-477:3-(22+220:2)=

1)23×(157-25×6)-477:3=23×7-159=3

2)22+220:2=132

3)3-132=-129

e) 135+5000:(2385-385)+3×(40+8:2)=269.5

1)135+5000:(2385-385)=135+5000:2000=135+2.5=137.5

2)3×(40+8:2)=3×44=132

3)137.5+132=269.5

f)36+0×(125×25-25×25)+33×3-33:33+33=167

1)36+0×(125×25-25×25)=36+0×2500=36

2)33×3-33:33+33=99-1+33=131

3)36+131=167

g)909-909×(102-909:9+0:1)-99×(9×9:9-9)=0

1)900-909×(102-909:9+0:1)=909-909×1=0

2)99×(9×9:9-9)=0

3)0-0=0

h)3×(6-6:2)+305:5+(100:5+8×5×0):5=75

1)3×(6-6:2)+305:5=9+61=70

2)(100:5+8×5×0):5=25:5=5

3)70+5=75

l)138+(27:3-1)×2:8-2×(100-195:15)×2=94

1)138+(27:3-1)×2:8=138+8×2:8=138+8=146

2)2×(100-195:15)×2=2×13×2=52

3)146-52=94

î)7+7:7×(7-7:7)×7:7=48

1)7+7:7×(7-7:7)×7:7=8×6×7:7=336:7=48

succese

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