AnnaE
#0

 

ORDINEA EFECTUARII OPERATIILOR

 

 

.         (25:5+7x29):2+[230-(38x2x1+9)]=

 

  • [(357:7+344:8):2]x31+17-(500:4+7)=

 

  • (28x5+30):10+729:9-[25x(39-19x2)]=

 

  • (57x2:3)+32x450-[39x(4+2):2]+8=

 

  • [(248:8-21x1):10]+(500:50+800:20)=

 

  • 29x3-38+[2000-(17x2+39x1:3)]=

 

  • 68:2+[564:6+(31x2+15x3-117:3)]=

 

  • [(294:7x34):2]+350x100-34x21=

 

  • 234:9+[4000-(31+7)x15]:5-219:3=

 

  • (31x3+74x5-32x9)-[200:20+(1000-693)]=

 

  • 400+480:4+[68:2+4x(20+12+18)]=

 

  • [1+(5x7-2x15)]:2x(2x8-15):[3:(1+14:7)+2]=

 

  • 98+8x[1004-4x(8:2x2-4:4x2)]=

 

  • [1+2x(6+6:3)-5]:6=

 

  • 1000-[409x(6:3)+56:8x5]=

 

  • [(35:7+21:7)x7+(3+9:3+27)]x7=

 

  • [(24x6+39x5)-2]+(2000-300:30)=

 

  • [(28x5:2x10)x5]+[31x(600:5+112:4)-83]=

 

 

 

 

 

 

 

 

Topics: fisa de lucru, ordinea efectuarii operatiilor, clasa a iv-a, matematica
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AnnaE
#10

Numele ....................................

Data ........................................

Clasa .......................................

 

                                   Ordinea efectuării operațiilor - clasa a IV

 

1. Calculați:

a) 10 + 18 x 0 + 0 - 5 x 0 + 16;

b) 612 : 3 + 16 x 10 - 19 x 1;

c) 400 : 8 : 2 + 425 : 5 - 630 : 9;

d) 6 + 204 x 3 + 13 x 3 - 288 : 2;

 

2. Calculați A + B + C, dacă:

A = 8 + 0 + 5 : 1 + 4 x 0 - 9 x 0;

B = 50 + 80 + 80 x 80 - 50 x 1 + 7 : 7;

C = 13 + 13 x 0 + 0 - 13 + 13 :1.

3. Efectuați:

a) 1 000 + 75 + 0 x 1243 + 1 : 1;

b) 202 + 202 : 2 - 202 x 1 - 1.

4. Calculați diferența x - y, știind că:

x = 3 x 9 + 4 x 7 + 6 x 3;                          y = 2 x 8 + 2 x 9 + 7 x 5.

5. Se dau numerele:

a = 6 x 8 + 2 x 9 + 6 x 4   și b = 6 x 8 - 2 x 9 - 6 x 4.

Cu cât este mai mare suma a + b decât diferența a - b ?

    

 

AnnaE
#11

Ordinea efectuarii operatiilor:

 

1.  6 : 2 + 8 x 4 -(3 + 2 + 1) x 5 =

2. (10 + 1 + 5) :8 + (80 + 40) :60 =

3.  (34 :2 + 3 x 3 - 5 x 2 x 2) : 6 • 1 =

4.  (7 + 4 + 3) - (8 + 2) + (11+ 6) :17 =

5.  (28 :7 + 1• 4) x 10 + (5 x 8 - 40 : 2)- 15 =

6.  (2 + 5 x 5) x 2 - 18 x 3 =

7. 15 • {(27 • (50 • 32)] x 5} :3 + 2 =

8.   2 x 7 + 16 :(9 - 6 + 1)-10 =

9.  3 x 2 + (8 :4 + 9 : 3) x 5 .(6 :2 + 44 :4) :7 =

10. (3 x 2 -5 x 0 + 3 x 3 - 17 :17) x 2 - 24 :2 =

11. (2 + 3 + 4 + 5) :7 + (26 :2 + 4x2) :21=

12. 16 :(8 + 2.6) + 2 x 6 + 6 =

13. 27 : (3 + 2 • 1 • 1) + 2 x 6 + 9 =

16. 7 - 16 :4 - (3 + (3 + 17) :2 + 2) : 5 =

17. (7 + 4.10) x 4 + (8 + 6 -(15-2)) x 6 =

18. 6 : 2 + 1350 :9 + 84 :2 .5000 :2500 =

19. 8 + 2 x 3 - 5 x 2 + (82 + 4 + 4) :(12 + 6 + 12) + 3 =

20. ((12 :4 + 9 :1 + 15 : 5) x 2 - (1 + 1+ 8 + 16 + 1)] :3 =

21. 12 :6 + 137 : 137 - (15 + (8 :4 -2 x 0) :2 - 5 x 3] =

22. [26 :(2 + 11x 2 .2 + 4)J x {[10 + (16 :4)) :(8 + 6 .7) + 2} =

23. 5 x (6 + 3 .4) + 2. 7 .(13 + 6.5) =

24. (44 + 22 + 11) :11 - 2 x 3 =

25. 1 + 2 x 4 :((6 x 6 + 5 x 44) : 64) =

26. 5 x (6 + 3 .4) + 2.7 .(13 + 6.5) :(3 + 4) x 5 =

27. 18 x 6 + 27 .(26 .(81 + 9 x 2 + 3 + 3 x 6)) =