经典题目 1 / 20 练习题一 2 . 53-(47-38)= 27 . 51-10+2= 52 . 52-(16-8)= 3 . 30-(22-11)= 28 . 27-(3+22)= 53 . 3-(2+1)= 4 . 13-(2+6)= 29 . 28-24+23= 54 . 32-(7+12)= 5 . 52-(51-47)= 30 . 31-(7+2)= 55 . 18-(2+12)= 6 . 5+1-2= 31 . 19+35-3= 56 . 43-(42-5)= 7 . 44-(16+14)= 32 . 43-18+12= 57 . 23-(4+...

时间:2025-02-19 09:01栏目:行业资料