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(1)$\frac{4}{5}+\frac{2}{5}$表示(
4
)个$\frac{1}{5}$加上(2
)个$\frac{1}{5}$，等于(6
)个$\frac{1}{5}$，结果是($\frac{6}{5}$
)。答案
(1)4 2 6 $\frac{6}{5}$
(2)5个$\frac{1}{11}$加上3个$\frac{1}{11}$等于(
8
)个$\frac{1}{11}$，结果是($\frac{8}{11}$
)。答案
(2)8 $\frac{8}{11}$
(3)7个$\frac{1}{6}$减去3个$\frac{1}{6}$等于(
4
)个$\frac{1}{6}$,结果是($\frac{4}{6}$(或$\frac{2}{3}$)
)。答案
(3)4 $\frac{4}{6}$(或$\frac{2}{3}$)
(4)在括号里填上“＞”、“＜”或“=”。
$\frac{9}{11} - \frac{4}{11}$ (
$1 - \frac{1}{7} - \frac{3}{7}$ (
$\frac{1}{5} + \frac{3}{5} + \frac{6}{5}$ (
$\frac{9}{11} - \frac{4}{11}$ (
＞
) $\frac{2}{19} + \frac{3}{19}$$1 - \frac{1}{7} - \frac{3}{7}$ (
＜
) $\frac{3}{10} + \frac{3}{10}$$\frac{1}{5} + \frac{3}{5} + \frac{6}{5}$ (
=
) $\frac{15}{11} + \frac{7}{11}$答案
(4)＞ ＜ =
② 根据图意列式计算。
(1)
= ?
(2)
= ?
(1)
= ?(2)
= ?答案
(1)$\frac{2}{4}+\frac{1}{4}=\frac{3}{4}$
(2)$\frac{3}{8}+\frac{5}{8}=1$
(2)$\frac{3}{8}+\frac{5}{8}=1$
