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四上简便计算及答案

2021-03-28 来源:乌哈旅游
472+503 =472+500+3 47+51+49+53

=(47+53)+(51+49) 436-99 =436-100+1 567-104 =567-100-4 =972+3 =975

143+(57+26) =143+57+26 =200+26 =226

78-46-14 =78-(46+14) =78-60 =18

32×125 =4×8×125 =4×(8×125) =4×1000 =4000

3×125×8 =3×(125×8) =3×1000 =3000 =100+100 =200

99+(38+101) =99+101+38 =200+38 =238

125×64 =125×8×8 =1000×8 =8000

500-99-1-98-2 =500-(99+1+98+2)=500-200 =300

340+498 =340+500-2 =840-2 =838 =336+1 =337

25×24 =25×4×6 =100×6 =600

65+(178+35) =65+35+178 =100+178 =278

288-199 =288-200+1 =188+1 =189

850-246-54

=850-(246+54)=850-300 =550 =467-4 =463

260÷13÷2 =260÷(13×2) =260÷26 =10

18×45 =45×2×9 =90×9 =810

101+202+303 =(100+200+300)+(1+2+3) =600+6 =606

373-(173+40) =373-173-40 =200-40 160

8×23×5 =8×5×23 25×(4×12)×5 =(25×4)×(12×5) 630÷35 =630÷7÷5 500÷25÷4

=500÷(25×4) =40×23 =920

720÷16÷5 =720÷(16×5) =720÷80 =9

125×15×8×6

=(125×8)×(15×6)=1000×90 =90000

25×32×125 =25×4×8×125

=(25×4)×(8×125)=100×1000 =100000

125×(6×8) =125×8×6 =1000×6 =6000 =100×60 =6000

45×16 =45×2×8 =90×8 =720

898-133-67 =898-(133+67) =898-200 =698

360÷8÷5 =360÷(8×5) =360÷40 =9

(363+95)+(37+105)=(363+37)+(95+105)=400+200 =600 =90÷5 =18

560÷14 =560÷7÷2 =80÷2 =40

630÷42 =630÷7÷6 =90÷6 =15

25×(13×4)=25×4×13 =100×13 =1300

35×14 =35×2×7 =70×7 =490

=500÷100 =5

101+202+303 =(100+200+300)+(1+2+3) =600+6 =606

15×(9×4) =15×4×9 =60×9 =540

999+99+9

=1000+100+10-3 =1110-3 =1107

567-(139+267) =567-267-139 =300-139 =161

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