241 四年级数学专项练习系列一之练习19 递等式专练

79×125                       973+126×21÷49

25×14×32                    340×706÷40

690+908×750                  347×101-347

103×45                       67+33×12

3325+675×201     521×(412×38)-1762      965+(160×150-9865)

8400÷210×75-1375     58968÷(104×63)+92    208-27828÷(491+282)

(350-125)÷25×4          1÷1+0÷12+12÷1+0×12

10660÷[4×(100-87)]           (125+14)×8

58×42+57×58+58               25×44

145×998                  125×64×125                 785×99+785

136×3+98×136-136        79×48+79×51+79            (25×107)×40

25×107×40              (25+12)×40                 76+24×53

8×(25+125)×4          1200-345+255            1000-1000÷25×4

396×25                   78×99                       808×125

250×(13+13+13+13)      45+82×99+37                 99×52+99

827-(127+48)            99×102                      998×998+998

79×101-79          37×37+64×37       42×42+59×42-42

48×201                             125×48

25×64×125                         199×99+99

202×56—56—56                      68×34+68×67—68

28+172×88-78                     (28+172)×88-78

(28+172)×(88-78)               [28+(172—88)] ×78

32×38+32×62              95×234+766×95

172×108-172×8       (100+2)×65             75×99+75

25×(400-4)                   25×44                     125×79

808×125

2544÷48×11                        437+(285+263)

125×25×64                        (379+797)÷(94-87)

275-32-68+35                       837×24+176×837

201×216         367×127+367×14-41×367        999×999+999

102×48       4000÷125          4500÷(45×25)          260÷5

24000÷125       (480+360+120)÷120         99×99+99

4×(19×50)         32×250                48×201

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