Giải câu 2 trang 16 VBT toán 5 tập 1

Bài 2: Trang 16 VBT toán 5 tập 1

Tìm :

a) + $\frac{3}{5}$ = $\frac{7}{2}$ b) - $\frac{1}{4}$ = $\frac{1}{5}$ c) 2 - = $\frac{4}{7}$

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Bài làm:

a) + $\frac{3}{5}$ = $\frac{7}{2}$

= $\frac{7}{2}$ - $\frac{3}{5}$

= $\frac{35}{10}$ - $\frac{6}{10}$

= $\frac{29}{10}$

b) - $\frac{1}{4}$ = $\frac{1}{5}$

= $\frac{1}{5}$ + $\frac{1}{4}$

= $\frac{4}{20}$ + $\frac{5}{20}$

= $\frac{9}{20}$

c) 2 - = $\frac{4}{7}$

= 2 - $\frac{4}{7}$

= $\frac{14}{7}$ - $\frac{4}{7}$

= $\frac{10}{7}$