100 puncte,coroana,5 stele, toata
Răspunsuri la întrebare
1.
56:7:4=8:4=2
987617-20300-100=967317-100=967217
6x7-5x6-72:8=42-30-9=12-9=3
64:8+3x4-4x4=8+12-16=20-16=4
96:3-72:6+126:6=32-12+21=20+21=41
9+(9x9:9)+220-20x0=9+9+220-0=238
12x10:6-(200-20):9+36:2-2=120:6-180:9+18-2=20-20+18-2=16
(60x3-30):5+240x3-(100:10):5=(180-30):5+720-10:5=150:5+720-2=30+720+2=752
2.
a. 2x3xa=90
6xa=90
a=90:6
a=15
b. 48:6xb=80
8xb=80
b=10
c. 635-178+c=10000
457+c=10000
c=10000-457
c=9643
d. 525+175-(2x25)+d=9782
525+175-50+d=9782
650+d=9782
d=9132
3.
a=9x7+7x5+5x3+3x1
a=63+35+15+3
a=116
b=9x7-7x5-5x3-3x1
b=63-35-15-3
b=10
a ? b
116 > 10
a>b
116-10=106
a este mai mare cu 106 decat b
Explicație pas cu pas:
56:7:4=8:4=2
987 617-20 300-100=967 317-100=967 217
6×7-5×6-72:8=42-30-9=12-9=3
64:8+3×4-4×4=8+12-16=20-16=4
96:3-72:6+126:6=32-12+21=20+21=41
9+(9×9:9)+220-20×0=
9+(81:9)+220-20×0=
9+9+220-0=
18+220=
238
12×10:6-(200-20):9+36:2-2=
20-180:9+18-2=
20-20+16=
0+16=
16
(60×3-30):5+240×3-(100:10):5=
(180-30):5+720-10:5=
150:5+720-2=
30+718=
748
2x3xa=90
6×a=90
a=90:6
a=15
v:2×3×15=6×15=90
48:6×b=80
8xb=80
b=80:8
b=10
v:48:6×10=8×10=80
635-178+c=10 000
457+c=10 000
c=10 000-457
c=9 543
v:635-178+9 543=457+9 543=10 000
525+175-(2×25)+d=9782
700-50+d=9782
650+d=9782
d=9782-650
d=9132
v:525+175-(2×25)+9132=700-50+9132=650+9132=9782
a=9×7+7×5+5×3+3×1
a=63+35+15+3
a=98+18
a=116
b=9×7-7×5-5×3-3×1
b=63-35-15-3
b=10
Comparăm:
116>10
116-10=106este mai mare