Fi de lucru 1

1. Indicai vecinii numerelor:

________ 3454_________

________2569_________

________4005__________

________ 7000__________

2. Alege vecinii ficrui numr dat, ncercuindu-i cu culoarea potrivit:

6631, 7729, 8860, 9911, 4436;

6630 4437 9912

7730 8859 9910 6632

8861 7728

4435

Fi de lucu 2

1. Alege din fiecare grup de numere pe cel mai mic, apoi ordoneaz-le cresctor i descresctor pe cele

rmase:

a). 9 454, 5 494, 7 897, 9 747, 9 775;

b). 3 669, 3 696, 3 878, 3 887, 3 458, 3 458.

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Fi de lucru 3

1. Cu ct este mai mare 7 848

dect 5 726.

2.Dac scad din nr. 8 479 nr.

254, obin..................

3.Numrul 8 179 este cu

...................mai mare dect

7 423 !

4.Vecinii nr. 7 999 sunt:

a). 7 989 i 8 000;

b). 7 998 i 8 000;

5. ntr-un stup sunt 2 453 de

albine i 5 420 de faguri cu

miere. Cte albine sunt n stup?

a). 2 543 c). 5 420

b). 2 453 d). 7 873

6). Dac adaug 3 500 la nr. 2

789, obin :

a). 6 298 c). 6. 928

b). 6 289 d). 6 982

7. Numrul 3 458 este cu

.....................mai mic dect 8

749.

8. Mrete pe 6 784 cu 2 083.

9. Micoreaz-l pe 9 438 cu 964.

10. Suma nr. 4 268 i 2 137

este........................

11. Diferena nr. 7 897 i 3 646

este.................................

12. Aflai nr. necunoscut

a+ 2543=4786

a=