简算难题,:24×205 672‐36﹢64 25+75‐25+75 5+263+55-198 87-187-139-61 1280÷16÷8 88×125 (125+70)×8 4004×25
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![简算难题,:24×205 672‐36﹢64 25+75‐25+75 5+263+55-198 87-187-139-61 1280÷16÷8 88×125 (125+70)×8 4004×25](/uploads/image/z/1249064-8-4.jpg?t=%E7%AE%80%E7%AE%97%E9%9A%BE%E9%A2%98%2C%EF%BC%9A24%C3%97205+672%26%23173%3B%26%23173%3B%E2%80%9036%EF%B9%A264+25%2B75%E2%80%9025%2B75+5%2B263%2B55-198+87-187-139-61+1280%C3%B716%C3%B78+88%C3%97125+%EF%BC%88125%2B70%EF%BC%89%C3%978+4004%C3%9725)
简算难题,:24×205 672‐36﹢64 25+75‐25+75 5+263+55-198 87-187-139-61 1280÷16÷8 88×125 (125+70)×8 4004×25
简算难题,
:24×205 672‐36﹢64 25+75‐25+75 5+263+55-198 87-187-139-61 1280÷16÷8 88×125 (125+70)×8 4004×25
简算难题,:24×205 672‐36﹢64 25+75‐25+75 5+263+55-198 87-187-139-61 1280÷16÷8 88×125 (125+70)×8 4004×25
24×205
=24×(200+5)
=4800+120
=4920
672‐36﹢64
=672+(64-36)
=672+28
=700
25+75‐25+75
=75+75+25-25
=75+75
=150
5+263+55-198
=268-198+55
=70+55
=125
87-187-139-61
=87-187-(139+61)
=-100-200
=-300
1280÷16÷8
=1280÷(16×8)
=1280÷128
=10
8×125 =1000
(125+70)×8
=125×8+70×8
=1000+560
=1560
4004×25
=(4000+4)×25
=100000+100
=100100
24×205 =24*200+24*5=4800+120=4920
672-36+64=672-36+100-36=672-(36+36)+100=672-72+100=700
25+75‐25+75 =25-25+75+75=150
5+263+55-198=5+55+263-200+2=60+263+2-200=325-200=125
87-187-139-6...
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24×205 =24*200+24*5=4800+120=4920
672-36+64=672-36+100-36=672-(36+36)+100=672-72+100=700
25+75‐25+75 =25-25+75+75=150
5+263+55-198=5+55+263-200+2=60+263+2-200=325-200=125
87-187-139-61=-(187-87+139+61)=-(100+200)=-300
1280÷16÷8 =1280÷8÷16=160÷16=10
88×125=80*125 +8*125=10000+1000=11000
(125+70)×8 =(200-5)*8=200*8-5*8=1600-40=1560
4004×25 =4000*25+4*25=100000+100=100100
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