四年级下册四则运算题型大全,内附答案,十分详尽!

  前几天老师分享过几类四则运算的经典习题,

  不知道大家有没有自己去算一算呢?

  今天老师把答案分享给同学们,

  希望你们都能认真核对一下!

  题型一:四则运算

  先算乘除后算加减,

  有括号先算括号,

  先算小括号,再算大括号!

  75÷〔138÷(100-54)〕

  =75÷[138÷46]

  =75÷3

  =25

  85×(95-1440÷24)

  =85×(95-60)

  =85×35

  =2975

  80400-(4300+870÷15)

  =80400-(4300+58)

  =80400-4358

  =76042

  240×78÷(154-115)

  =240×78÷39

  (此处可以先算78÷39

  只有加减,或只有乘除的,可以调换顺序)

  =240×2

  =480

  1437×27+27×563

  =27×(1437+563)

  =27×2000

  =54000

  280+840÷24×5

  =280+35×5

  =280+175

  =455

  325÷13×(266-250)

  =325÷13×16

  =25×16

  =25×4×4

  =400

  58870÷(105+20×2)

  =58870 ÷(105+40)

  =58870÷145

  =406

  137×27+27×563

  =27×(137+563)

  =27×700

  =18900

  81432÷(13×52+78)

  =81432÷(676+78)

  =81432÷754

  =108

  (947-599)+76×64

  =348+76×64

  =348+4864

  =5212

  36×(913-276÷23)

  =36×(913-12)

  =36×901

  =32436

  题型二:加法的结合律与交换律

  48+25+175

  =48+(25+175)

  =48+200

  =248

  578+143+22+57

  =(578+22)+(143+57)

  =600+200

  =800

  357+288+143

  =(357+143)+288

  =500+288

  =788

  378+527+73

  =378+(527+73)

  =378+600

  =978

  58+39+42+61

  =( 58+42)+(39+61)

  =100+100

  =200

  75+34+125+366

  =(75+125)+(34+366)

  =200+400

  =600

  125+75+320

  =(125+75)+320

  =200+320

  =520

  158+395+105

  =158+(395+105)

  =158+500

  =658

  822+197+78

  =(822+78)+197

  =900+197

  =1097

  3.乘法分配律(一):

  34×72+34×28

  =34x(72+28)

  =34x100

  =3400

  7×48+7×52

  =7x(48+52)

  =7x100

  =700

  35×37+65×37

  =37x(35+65)

  =37x100

  =3700

  85×82+82×15

  =82x(85+15)

  =82x100

  =8200

  25×97+25×3

  =25x(97+3)

  =25x100

  =2500

  76×25+25×24

  =25x(76+24)

  =250o

  16×17+16×23

  =16x(17+23)

  =16x40

  =640

  27×36+27×64

  =27x(36+64)

  =27x100

  =2700

  73×36+36×27

  =36x(73+27)

  =36x100

  =3600

  4.乘法分配律(二):

  38×99+38

  =38x99+38x1

  =38x(99+1)

  =38x100

  =3800

  75×299+75

  =75 x299+75x1

  =75x(299+1)

  =75x300

  =22500

  102×99+102

  =102x99+102x1

  =102x(99+1)

  =102x100

  =10200

  39+9×39

  =39x1+39x9

  =39x10

  =3900

  99×128+128

  =99x128+128x1

  =128x(99+1)

  =128x100

  =12800

  27+99×27

  =27x1+99x27

  =27x(99+1)

  =27x1oo

  = 27oo

  34+199×34

  =34x1+34x199

  =34x(199+1)

  =34x200

  =6800

  35×99+35

  =35x99+35x1

  =35x(99+1)

  =35x100

  =3500

  5.乘法交换结合律(一):

  25 ×125×32

  =25x125x4x8

  =(25x4)x(125x8)

  =100x1000

  =100 000

  (15×25)×4

  =15x(25x4)

  =15x100

  =1500

  38×25×4

  =38x(25x4)

  =38x1oo

  =38oo

  35×2×5

  =35x(2x5)

  =35x10

  =350

  (60×25)×4

  = 60x(25x4)

  =60x100

  =600

  (125×5)×8

  =(125x8)x5

  =1000x5

  =5000

  25×17×4

  =25x4x17

  =100x17

  =1700

  (25×125)×(8×4)

  =(125x8)x(25x4)

  =1000x1oo

  =1000oo

  38×125×8×3

  =38x3x(125x8)

  =114x1000

  =114000

  这些是老师一点点打出来的,

  希望能带给孩子带来帮助!

  如果喜欢老师,

  记得帮老师分享一下哈!

  非常感谢大家一直以来的支持!

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