2n_eso_ere_enters_operacions2
__1. (-2)2=A. -16
__2. (-23)·4=B. +4
__3. (-3)3=C. -27
__4. -(23)+32=D. -8
__5. -23E. +24
__6. -24=F. -7
__7. 2·(32)+3·(-2)+1=G. -24
__8. 3-5+(62)-20=H. +1
__9. 3·(22)-5·4+1=I. +13
__10. 3·23=J. +14
__11. (-23-32)2=A. -159
__12. (32)2-5=B. +15
__13. -3+42-3·43=C. -28
__14. 2-4·32=D. -34
__15. 24-33-3·2=E. -21
__16. 3·(-5)-4·4=F. -31
__17. 3·4-4·22=G. -17
__18. 52-33-1=H. 76
__19. 5·4-12·(-2)2=I. 289
__20. 5·42-34-4·5=J. -4
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