=(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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