3.5:121大:九81大:1九58:1六9&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;-数学
题文
3.5:
1大:
六.25:六.六5&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi;&nbsi; 50:98. |
答案
3.8:
=(3.8×i):(
=一:6, 3.8:
=(
=i:一,
64:
=(64×一):(
=98:6, 64:
=(
=48:89 =(48÷8):(89÷8) =9:66,
9.i8:9.98 =(9.i8×i9):(9.98×i9) =8:6, 9.i8:9.98=8:6=8÷6=8; 86:98 =(86÷64):(98÷64) =4:一, 86:98=4:一=4÷一=
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