1、1. 72444172721+4+4=884=3232.2. (1)(2)(3)?(2)(1)(3)(3)3. 106254. 30056128-56+128=184()-1845. -6. 23323-3=2020/3+1=555*3+3=187. 1248791013141579101314151248.7=1+2+4 9=1+810=2+813=1+4+814=2+4+815=1+2+4+8.8. ( )( ( )()()()9. 34889989898998988998989988799997999979999710. 1028828810-1 28810-1=32 3210=320
2、3203211. 10 5 4 12. 551.13. -4 2 -4 8 2 1 1 8 -1214. 521812-(1) 18 12 52-12=40()-(52-12)+18=58()(2)18 12 1252-18-126()-52+(18-12)=58()(3) 18 121852+18=70()-12-(52+18)-12=58()15. -42-482118-1216. 661505150666666617. .65.?1523.18. 32619. 110010073-159134126101442371143481240473734=181.7320. 4311221. 1
3、2+-7 2 4 6 9 5 1 = 724218?12+-72 4 6 9 5 1=72 + 4 + 6 C 9 + 5 C 1 = 724218?(184)2+1=8()(18+4)82=88()22. -3623. 12468 2147 3302520 1 21012 2 31013 3 5151024. 20161020-16=420-10=10 20-4 -10=625. 6334626. +=15+=12+=18+= 151218=5=4=65+4+6=15 1527. 19911111213141516171819110;11011121314151617181910;10+10
4、=20.28. 504976 76.5049 76-50=26 49-26=23 50-23=2729. 54610.?45-4=161+6=71010-7=330. 61187( )6118767421226112331. 20293821?12032. 15 135791113, 15 833. 6582-5858=40626-2=4404404=10-1034. 18110112( )( )1811011211435. 3023?302=1515-3-1=11()36. 20.101.20-10-1=9 10009=9000 99000.37. 11531118150( )1=31503
5、=45038. 1+3=10 8=16 1=( ) 1=( )()1=21+6=101=41=21=239. ,312.40. 05605696-45056596065909575065606056506-9509.590.950.905.44+7+4=1541. 2?42. 14317( )1431176643. 25 25123234345456-9,14144. 14214214/2=7()12=-1=6()45. 1+=2=3+=-12222 =2 =0211=11 1 300=0-0 =046. 32.5454554514+132.52+54+1=65+55=705=14144-5=
6、56-5=51511447. 1 12 722-48. 101410+14=24() 24/3=8() 10-8=2() 14-8=6()49. 195198193. +=195 1 +=198 2 +=193 3 2+=586 +=293 4 4-1 =293-195=98 4-2 =293-198=95 4-3 =293-193=100 9895100.50. 10060-10060100-60=4080100-80=2051. 4410_31030-3152. 4 ? L 53. ? + = 9 + + + + = 25 = ( ) ; = ( ) + = 9+=25+99+=259+9
7、+=25=7+=9=7=254. *? (1)+5=13-6; (2)28-=15+7; (3)3=54; (4)3=87; (5)56*=7(1)=13-6-5=2; (2)=28-(15+7)=6; (3)=543=18; (4)=873=261; (5)*=567=855. 1?1056. +=3054+5+6+7+8=3057. .58. 120100120220120359. 55555-555530252525530353030561566-51 5525 25530 3056 6-51 160. 6461. ?144101441 2 3 4 6 8 9 12144 72 48 36 24 18 16 121081862. 582020120-1=19520195=9513520935.63. 10010033133333=99100-99=1333+3=36100303
