Question

Đã trả lời bởi chuyên gia

Answer 1

$\frac{3}{10} + \frac{1}{2} \times \frac{1}{3}$

= $\frac{3}{10} + \frac{1}{6}$

= $\frac{7}{15}$

$\frac{3}{4} \times \frac{2}{3} - \frac{3}{4} \times \frac{1}{6}$

= $\frac{2}{3} \times \frac{1}{6}$

= $\frac{1}{9}$

Answer 2

Ta có:

$\frac{3}{10} + \frac{1}{2} \times \frac{1}{3} = \frac{3}{10} + \frac{1}{6} = \frac{9}{30} + \frac{5}{30} = \frac{14}{30} = \frac{7}{15} \frac{3}{4} \times \frac{2}{3} - \frac{3}{4} \times \frac{1}{6} = \frac{3}{4} \times (\frac{2}{3} - \frac{1}{6}) = \frac{3}{4} \times \frac{1}{2} = \frac{3}{8} \frac{8}{15} : \frac{2}{11} + \frac{2}{15} : \frac{2}{11} = \frac{8}{15} \times \frac{11}{2} + \frac{2}{15} \times \frac{11}{2} = \frac{11}{2} \times (\frac{8}{15} + \frac{2}{15}) = \frac{11}{2} \times \frac{10}{15} = \frac{11}{3}$

...Xem thêm

Answer 3

Ta có:

$\frac{3}{10} + \frac{1}{2} \times \frac{1}{3} = \frac{3}{10} + \frac{1}{6} = \frac{9}{30} + \frac{5}{30} = \frac{14}{30} = \frac{7}{15} \frac{3}{4} \times \frac{2}{3} - \frac{3}{4} \times \frac{1}{6} = \frac{3}{4} \times (\frac{2}{3} - \frac{1}{6}) = \frac{3}{4} \times \frac{1}{2} = \frac{3}{8} \frac{8}{15} : \frac{2}{11} + \frac{2}{15} : \frac{2}{11} = \frac{8}{15} \times \frac{11}{2} + \frac{2}{15} \times \frac{11}{2} = \frac{11}{2} \times (\frac{8}{15} + \frac{2}{15}) = \frac{11}{2} \times \frac{10}{15} = \frac{11}{3}$

Answer 4

$\frac{3}{10} + \frac{1}{2} x \frac{1}{3} = \frac{3}{10} + \frac{1}{6} = \frac{3 x 6}{60} + \frac{10}{60} = \frac{3 x 6 + 10}{60} = \frac{28}{60} = \frac{7}{15}$

$\frac{3}{4} x \frac{2}{3} - \frac{3}{4} x \frac{1}{6} = \frac{1}{2} - \frac{1}{4 x 2} = \frac{1}{2} - \frac{1}{8} = \frac{8}{16} - \frac{2}{16} = \frac{6}{16} = \frac{3}{8}$

*

$\frac{8}{15} : \frac{2}{11} + \frac{2}{15} : \frac{2}{11} = \frac{8}{15} x \frac{11}{2} + \frac{2}{15} x \frac{11}{2} = \frac{11}{15} x \frac{8}{2} + \frac{11}{15} x \frac{2}{2} = \frac{11}{15} x 4 + \frac{11}{15} x 1 = \frac{11}{15} x 5 = \frac{55}{15} = \frac{11}{3}$

.

...Xem thêm

Answer 5

$\frac{3}{10} + \frac{1}{2} x \frac{1}{3} = \frac{3}{10} + \frac{1}{6} = \frac{3 x 6}{60} + \frac{10}{60} = \frac{3 x 6 + 10}{60} = \frac{28}{60} = \frac{7}{15}$

$\frac{3}{4} x \frac{2}{3} - \frac{3}{4} x \frac{1}{6} = \frac{1}{2} - \frac{1}{4 x 2} = \frac{1}{2} - \frac{1}{8} = \frac{8}{16} - \frac{2}{16} = \frac{6}{16} = \frac{3}{8}$

*

$\frac{8}{15} : \frac{2}{11} + \frac{2}{15} : \frac{2}{11} = \frac{8}{15} x \frac{11}{2} + \frac{2}{15} x \frac{11}{2} = \frac{11}{15} x \frac{8}{2} + \frac{11}{15} x \frac{2}{2} = \frac{11}{15} x 4 + \frac{11}{15} x 1 = \frac{11}{15} x 5 = \frac{55}{15} = \frac{11}{3}$

.

Answer 6

3/10 +1/2 x 1/3 = 3/10 + 1/6 = 7/15

3/4 x 2/3 - 3/4 x 1/6 = 3/4 x ( 2/3 - 1/6) = 3/4 x 1/2 = 3/8

8/15 : 2/11 + 2/15 : 2/11 = 8/15 x 11/2 + 2/15 x 11/2 = 11/2 x ( 8/15 + 2/15) = 11/2 x 2/3 = 11/3

4 câu trả lời 333

Câu hỏi hot cùng chủ đề

Bài viết mới nhất Lớp 4