(51+三十五分之三十四)除以17 19.9+19.9乘99 999乘1999简算
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(51+三十五分之三十四)除以17 19.9+19.9乘99 999乘1999简算
19.9+19.9乘99 是一题999乘1999是一题(51+三十五分之三十四)除以17 是一题
19.9+19.9乘99 是一题999乘1999是一题(51+三十五分之三十四)除以17 是一题
![(51+三十五分之三十四)除以17 19.9+19.9乘99 999乘1999简算](/uploads/image/z/5166443-11-3.jpg?t=%2851%2B%E4%B8%89%E5%8D%81%E4%BA%94%E5%88%86%E4%B9%8B%E4%B8%89%E5%8D%81%E5%9B%9B%29%E9%99%A4%E4%BB%A517+19.9%2B19.9%E4%B9%9899+999%E4%B9%981999%E7%AE%80%E7%AE%97)
(51+34/35)÷17
=(51+34/35)*1/17
=51*1/17 +34/35*1/17
=3+2/35
=3又2/25
19.9+19.9*99
=19.9*(1+99)
=19.9*100
=1990
999*1999
=(1000-1)*1999
=1999000-1999
=1999000-(2000-1)
=1999000-2000+1
=1997000+1
=1997001
=(51+34/35)*1/17
=51*1/17 +34/35*1/17
=3+2/35
=3又2/25
19.9+19.9*99
=19.9*(1+99)
=19.9*100
=1990
999*1999
=(1000-1)*1999
=1999000-1999
=1999000-(2000-1)
=1999000-2000+1
=1997000+1
=1997001