简便计算专项练习,附答案

栏目:素质教育  时间:2022-12-16
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  四年级下册数学简便计算题

  92+99 197+102 354-108

  =92+(100-1) =197+(100+2) =354-(100+8)

  =92+100-1 =197+100+2 =354-100-8

  =191 =299 =246

  405-99 127-98 323+189-123

  =405-(100-1) =127-(100-2) =323-123+189

  = 405-100+1 =127-100+2 =389

  =306 =29

  545-167-145 478-47-178 344-(144+37)

  =545-145-167 =478-178-47 =344-144-37

  =233 =253 =163

  236-(177+36) 400-256-44 517-53-47

  =236-36-177 =400-(256+44) =517-(53+47)

  =23 =100 =417

  248+86-48 672-36+64 (6467-832)+(1832-1467)

  =248-48+86 =672-(36+64) =6467-1467+(1832-832)

  = 286 =572 =6000

  1530+(592-530)-192 (2+4+6+……+98+100)-(1+3+5+……+97+99)

  =1530-530+(592-192) =(2-1)+(4-3)+…+(98-97)+(100-99)

  =1400 =1+1+...+1+1 =50

  25×9×4 45×4×5 23 ×5×2

  =25×4×9 =45×(4×5) =23×(5×2)

  =900 =90 =230

  8×(125×13) (250×125)×(4×8)

  =8×125×13 =125×8×(250×4)

  =13000 =1000000

  42×125×8×5 25×4×88×125

  =125×8×(42×5) =100×11×(8×125)

  =210000 =1100000

  72×125 125×64×25 42×125×8×5

  =8×125×9 =125×8×(25×8) =42×5×(125×8)

  =9000 =200000 = 210000

  25×4×88×125 88×125

  =100×(8×125) ×11 =8×125×11

  =100×1000×11 =1000×11

  =100000×11 =11000

  =1100000

  (12+50)×40 125×(40-4) 76×103

  =12×40+50×40 =125×40-125×4 =76×(100+3)

  =880 =5400 =76×100+76×3

  =880 =5400 =76×100+76×3

  =7828

  18×125 25×44 42×25

  =(10+8)×125 =25×4×11 =2×25×21

  =10×125+8×125=2250 =110 =1050

  99×78 99×9

  =(100-1) ×78 =(100-1)×9

  =100×78-1×78 =100×9-9×1

  =7800-78 =900-9

  =7722 =891

  45×37+37×55 28×21+28×79 17×23-23×7

  =37×+(45+55) =28×(21+79) =23×(17-7)

  =3700 =2800 =230

  38×46+64×38 99×32+32 46+46×59

  =38×(46+64) =32×(99+1) = 46×(59+1)

  =38×110 =3200 =2760

  =38×(100+10)

  =38×100+38×10

  =4180

  167×2+167×3+167×5 39×8+6×39-39×4

  =167×(2+3+5) =39×(8+6-4)

  =1670 =390

  28×225-2×225-6×225 (42+25)×125+(18+15)×125

  =225×(28-2-6) =125×(42+18+25+15)

  =4500 =12500

  23×2×4+25×4×2+27×1×8+25×8×1 99×22+33×34

  =8×(23+25+27) =33×(66+34)

  =600 =3300

  (12+50)×40 125×(40-4) 86×103

  =12×40+50×40 =125×40-125×4 =86×(100+3)

  =680 =4500 =86×100+86×3

  =8858

  18×125 25×44 42×25

  =(10+8) ×125 =25×4×11 =2×25×21

  =125×10+125×8 =1100 =1050

  =2250

  99×9 99×78 45×38+38×55

  =(100-1) ×9 =(100-1) ×78 =(45+55) ×38

  =100×9-9 =78×100-78 =3800

  =91 =7722

  28×21+28×79 37×23-23×7 38×46+64×38

  =(21+79) ×79 =(37-7) ×23 =(46+64) ×38

  =7900 =690 =3800

  99×32+32 46+46×59 167×2+167×3+167×5

  =(99+1) ×32 =(59+1) ×59 =(2+3+5) ×167

  =3200 =3540 =1670

  39×8+6×39-39×4 28×225-2×225-6×225

  =(8+6-4) ×39 =(28-2-6) ×225

  =390 =2500

  (42+25)×125+(18+15)×125 2005×20062006-2006×20052005

  =[(42+18)+(25+15)] ×125 =2005×2006×10001-2006×2005×10001

  =12500 =0

  360÷4÷9 250÷5÷2 600÷12÷5

  =360÷(4×9) = 250÷(5×2) =600÷(12×5)

  =10 =25 =10

  800÷5÷8 480÷5÷48 240÷5÷12

  =800÷8÷5 =480÷48÷5 =240÷12÷5

  =20 =2 =4

  420÷35 2400÷25 7800÷12

  =420÷7÷5 =2400÷5÷5 =7800÷6÷2

  =12 =96 =650

  960×46÷48 99000÷121×11 3702×38÷1234

  =960÷48×46 =99000÷(121÷11) =1234×3×38÷1234

  =920 =9000 =114

  640÷(16÷4) 1000÷(125÷4)

  =640÷16×4 =1000÷125×4

  =160 =32

  250÷5÷2 600÷12÷5 800÷5÷8 480÷5÷48

  =250÷(5×2) =600÷(12×5) =800÷8÷5 =480÷48÷5

  =25 =10 =20 = 2

  240÷5÷12 420÷35 117+392+608 88×27+27×12

  =240÷12÷5 =420÷7÷5 =117+(392+608) =(88+12) ×27

  =4 =12 =1117 =270

  45×4×5 23 ×5×2

  =45×(4×5) =23×(5×2)

  =90 =230

  25×9×4 8×(125×13) (250×125)×(4×8)

  =25×4×9 =8×125×13 =250×4×(125×8)

  =900 =13000 =1000000

  88×125 72×125 125×64×25

  =11×(8×125) =9×(8×125) =125×8×(8×25)

  =11000 =9000 =100000

  42×125×8×5 25×4×88×125 (12+50)×40

  =42×5×(8×125) =100×11×(8×125) =12×40+50×40

  =210000 =1100000 =2480

  125×(40-4) 76×103 18×125

  =125×40-125×4 =76×(100+3) =(10+8) ×125

  =4500 =76×100+3×76 =10×125+8×125

  =7828 =2250

  25×44 42×25 99×9 99×78

  =25×(40+4) =(40+2) ×25 =(100-1) ×9 =(100-1) ×78

  =25×40+25×4 =40×25+2×25 =9×100-9 =7800-78

  =1100 =1050 =891 =7722

  45×37+37×55 28×21+28×79 17×23-23×7

  =(45+55) ×37 =(21+79) ×79 =(17-7) ×23

  =3700 =7900 =230

  38×46+64×38 99×32+32 46+46×59

  =(46+64) ×38 =(99+1) ×32 =(59+1) ×46

  =110×38 =3200 =2760

  =(10+100) ×38

  =38×10+38×100

  =4180

  167×2+167×3+167×5 39×8+6×39-39×4 360÷4÷9

  =(2+3+5) ×167 =(8+6-4) ×39 =360÷(4×9)

  =1670 =390 =10

  117+392+608 88×27+27×12

  =117+(392+608) =(88+12) ×27

  =1117 =2700

  88×27+27×12 125×64+125×36

  =(88+12) ×27 =(64+36) ×125

  =2700 =12500

  64×199+64

  =64×(199+1)

  =12800

  87×53+87×47 7×75-7×25 167×25+32×25+25

  =(53+47) ×87 =(75-25) ×7 =(167+32+1) ×25

  =8700 =350 =5000

  38×99+38 147+147×99 25×(4+8)

  =(99+1) ×38 =(99+1) ×147 =25×4+8×25

  =3800 =14700 =300

  108×75 35×201 75×98

  =(100+8) ×75 =35×(200+1) =75×(100-2)

  =8100 =7035 =7350

  25×7×4 2×125×8×6 25×32×125

  =25×4×7 =2×6×(125×8) =25×4×(8×125)

  =700 =12000 =100000

  125×88 25×48 3500÷4÷25

  =25×8×11 =25×8×6 =3500÷(4×25)

  =11000 =600 =35

  420÷35÷2 2.1 × 99 + 2.1

  =420÷(35×2) =2.1×(99+1)

  =60 =210

  4800÷25 (13×8×5×6)÷(4×5×6)

  =48×100÷25 =13×(8÷4) ×(5÷5) ×(6÷6)

  =48×4 =26

  =192

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