A=6*25*8+4*12*47+2*28*24
B=35*34+65*75+35*86+65*45
C=341*67+16*341+659*83
D=2*4*5*8*25*42*125
E=19991999*1998-19981998*1999
A=6*25*8+4*12*47+2*28*24 B=35*34+65*75+35*86+65*45 C=341*67+16*341+659*83 D=2*4*5*8*25*42*125 E=19991999*1998-19981998*1999
By Faith
Giải thích các bước giải:
`A=6*25*8+4*12*47+2*28*24`
`=48*25+48*47+48*28`
`=48*(25+47+28)`
`=48*100=4800`
`B=35*34+65*75+35*86+65*45`
`=(35*34+35*86)+(65*75+65*45)`
`=35(34+86)+65(75+45)`
`=35*120+65*120`
`=120*(35+65)`
`=120*100=12000`
`C=341*67+16*341+659*83`
`=341*(67+16)+659*83`
`=341*83+659*83`
`=83*(341+659)`
`=83*1000=83000`
`D=2*4*5*8*25*42*125`
`=(2*5)*(4*25)*(8*125)*42`
`=10*100*1000*42`
`=42000000`
`E=19991999*1998-19981998*1999`
`=1999*10001*1998-19981998*1999`
`=1999*(10001*1998-19981998)`
`=1999*(19981998-19981998)`
`=0`
`A = 6. 25 . 8 + 4. 12. 47 + 2. 28 . 24`
`A = (6. 8) . 25 + (4. 12) . 47 + (2. 24) . 28`
`A = 48 . 25 + 48. 47 + 48 . 28`
`A = 48 .(25 + 47 + 28)`
`A = 48. 100`
`A = 4800`
________________________
`B = 35. 34 + 65. 75 + 35. 86 + 65. 45`
`B = (35 . 34 + 35. 86) + (65. 75 + 65. 45)`
`B = 35. (34 + 86) + 65. (75 + 45)`
`B = 35 . 120 + 65. 120`
`B = 120. (35 + 65)`
`B = 12000`
________________________
`C = 341 . 67 + 16. 341 + 659 . 83`
`C = 341. (67 + 16) + 659. 83`
`C = 341 . 83 + 659 . 83`
`C = 83. (341 + 659)`
`C = 83. 1000`
`C = 83000`
_________________________
`D = 2. 4 . 5 . 8 . 25. 42. 125`
`D = (2. 5). (4. 25). (8. 125) . 42`
`D = 10. 100 . 1000 . 42`
`D = 1000000. 42`
`D = 42000000`
_________________________
`E = 19991999. 1998 – 19981998 . 1999`
`E = (1999. 10001). 1998 – 19981998. 1999`
`E = 1999. (10001. 1998) – 19981998. 1999`
`E = 1999. 19981998 – 19981998 . 1999`
`E = 0`