241四年级数学专项演习系列一之演习15 附应案

241四年级数学专项演习系列一之演习15

递等式计算(能简则简)

63×48+52              54÷54+54×1-54              176 +24×83

1012-12×28             101×101                            101×101-101

74+26×58                74×58+26×58             867-139+261-33

867-139-261-33             321×99+321             100÷4×25

125×88                                28×25                       102×25

25×44                       59×33+59×66+59                   (45×8+55×8) ×125

666+333×98                  178×199                        101×378-378

44×44+44+44×45                      179×56+56×21                 468×99+468

20×125×25×64                          49×58+58                      (25+25+25+25) ×617

68×49+49×31+49                          999×99+99                  279×97+279×4-279

33×9+99×7                         1784-(784+563+337)                (126+126×6+126) ×125

154×16-(15+15×153)+154                         58×263-63×58

157×16÷157×16                       810×21+780×81+810                      69×48+23×57-23

84×470+840×53                25×44×3                328-57+143+172

328-57-143+172                                     2790-125+710-375

2790-125+710+375                25×(4×8) ×125                25×(4+8) ×125

241四年级数学专项演习系列一之演习26 附应案

63×48+52=3076

54÷54+54×1-54=1

176 +24×83=2168

1012-12×28=676

101×101=10201

101×101-101=10100

74+26×58=1582

74×58+26×58=5800

867-139+261-33=956

867-139-261-33=434

321×99+321=32100

100÷4×25=625

125×88=11000

28×25=700

102×25=2550

25×44=1100

59×33+59×66+59=5900

(45×8+55×8)×125=100000

666+333×98=33300

178×199=35422

101×378-378=37800

44×44+44+44×45=3960

179×56+56×21=11200

468×99+468=46800

20×125×25×64=4000000

49×58+58=2900

(25+25+25+25)×617=61700

68×49+49×31+49=4900

999×99+99=99000

279×97+279×4-279=27900

33×9+99×7=990

1784-(784+563+337)=100

(126+126×6+126)×125=126000

154×16-(15+15×153)+154=308

58×263-63×58=11600

157×16÷157×16=256

810×21+780×81+810=81000

69×48+23×57-23=4600

84×470+840×53=84000

25×44×3=3300

328-57+143+172=586

328-57-143+172=300

2790-125+710-375=3000

2790-125+710+375=3750

25×(4×8)×125=100000

25×(4+8)×125=37500

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posted @ 21-05-30 12:26  作者:admin  阅读量:

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