Toán 1/1.2+1/2.3+…+1/99.100 Giúp mk với mk mới lớp 5 12/09/2021 By Ximena 1/1.2+1/2.3+…+1/99.100 Giúp mk với mk mới lớp 5
Đáp án: `1/1.2`+`1/2.3`+…+`1/99.100` =`1`-`1/2`+`1/2`-`1/3`+`1/3`-`1/4`+`…`+`1/99`-`1/100` =`1`-`1/100` =`99/100` Make by :@Legend_Star Trả lời
$\frac{1}{1.2}$ + $\frac{1}{2.3}$ +…+ $\frac{1}{99.100}$ = $1$ – $\frac{1}{2}$ + $\frac{1}{2}$ – $\frac{1}{3}$ +…+ $\frac{1}{99}$ – $\frac{1}{100}$ = $1$ – $\frac{1}{100}$ = $\frac{100}{100}$ – $\frac{1}{100}$ = $\frac{99}{100}$ Trả lời
Đáp án:
`1/1.2`+`1/2.3`+…+`1/99.100`
=`1`-`1/2`+`1/2`-`1/3`+`1/3`-`1/4`+`…`+`1/99`-`1/100`
=`1`-`1/100`
=`99/100`
Make by :@Legend_Star
$\frac{1}{1.2}$ + $\frac{1}{2.3}$ +…+ $\frac{1}{99.100}$
= $1$ – $\frac{1}{2}$ + $\frac{1}{2}$ – $\frac{1}{3}$ +…+ $\frac{1}{99}$ – $\frac{1}{100}$
= $1$ – $\frac{1}{100}$
= $\frac{100}{100}$ – $\frac{1}{100}$
= $\frac{99}{100}$