Question

Buna Dragilor☺︎︎ As avea ne voie de : 7,8,9,13 in 10-30 de minute, take you're time♡︎ Dau coroana♕︎​

Answer 1

Răspuns:

7.

a×b

4×2=8

2×3=6

5×2=10

a×c

4×134=536

2×345=690

5×408=2040

b×c

2×134=268

3×345=1035

2×408=816

a×b×c

4×2×134=1072

\/

8×134=1072

2×3×345=2070

\/

6×345=2070

5×2×408=4080

\/

10×408=4080

8.

a)75×5=375

375×5=1875

b)235+55=290

290×2=580

9.

a:5=125

a=5×125

a=625

P:625:5=125

\/

125=125 A.

b:2=225

b=2×225

b=450

P:450:2=225

\/

225=225 A.

c:4=421

c=4×421

c=1684

P:1684:4=421

\/

421=421 A.

d:8=322

d=8×322

d=2576

P:2576:8=322

\/

322=322 A.

13.

a)456×5=2280

4325-2280=2045

b)300+275=575

575×9=5175

La c de la exercițiul 8 nu am știut

Answer 2

ex 7:

primul rand (cu 4, 2, 134)

4; 2; 134; 8; 536; 268; 1072

al doilea rand (cu 2, 3, 345)

2; 3; 345; 6; 690; 1035; 2070

al treilea rand (cu 5, 2, 408)

5; 2; 408; 10; 2040; 816; 4080

ex 8:

a) 1875 (75x5=375x5=1875)

b) 235+55=290x2=580

c) 1000-924=76:2=38

ex 9:

a : 5 = 125

a = 125 x 5

a = 625

625 : 5 = 125

-

b : 2 = 225

b = 225 x 2

b = 450

450 : 2 = 225

-

c : 4 = 421

c = 421 x 4

c = 1684

1684 : 4 = 421

-

d : 8 = 322

d = 332 x 8

d = 2656

2656 : 8 = 322

ex 13:

a) 4325 - 456 x 5

= 4325 - 2280

= 2045

b) (300 + 275) x 9

= 575 x 9

= 5175

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Scuze pentru raspunsul tarziu dar sper ca te-am ajutat!!