一、口算。
$\frac{3}{4}+\frac{1}{6}=$
$45÷\frac{3}{8}=$
$\frac{7}{12}×\frac{4}{7}=$
$1000-635=$
$\frac{4}{5}÷\frac{7}{10}=$
$\frac{4}{7}+\frac{2}{35}=$
$12.6÷3=$
$0.36×6=$
$\frac{3}{5}-\frac{1}{6}=$
$\frac{3}{4}+\frac{1}{6}=$
$\frac{11}{12}$
$\frac{4}{5}-\frac{3}{10}=$$\frac{1}{2}$
$4÷\frac{1}{4}×16=$256
$45÷\frac{3}{8}=$
120
$\frac{8}{25}×\frac{5}{12}=$$\frac{2}{15}$
$\frac{5}{3}-\frac{1}{4}-\frac{3}{4}=$$\frac{2}{3}$
$\frac{7}{12}×\frac{4}{7}=$
$\frac{1}{3}$
$380+720=$1100
$\frac{3}{4}×\frac{4}{3}÷5=$0.2
$1000-635=$
365
$\frac{13}{2}×\frac{3}{8}=$$\frac{39}{16}$
$(\frac{3}{4}-\frac{3}{8})×\frac{3}{4}=$$\frac{9}{32}$
$\frac{4}{5}÷\frac{7}{10}=$
$\frac{8}{7}$
$75\%-0.13=$0.62
$0.25+1÷0.5=$2.25
$\frac{4}{7}+\frac{2}{35}=$
$\frac{22}{35}$
$2÷16=$$\frac{1}{8}$
$88×\frac{1}{8}÷9=$$\frac{11}{9}$
$12.6÷3=$
4.2
$4.5×8=$36
$\frac{2}{5}-\frac{2}{5}×\frac{1}{5}=$$\frac{8}{25}$
$0.36×6=$
2.16
$75÷1.5=$50
$2.5×12.5×0.8=$25
$\frac{3}{5}-\frac{1}{6}=$
$\frac{13}{30}$
$0.8×1.3=$1.04
$\frac{3}{7}×15÷\frac{3}{7}×15=$225
答案
一、$\frac{11}{12}$ $\frac{1}{2}$ 256
120 $\frac{2}{15}$ $\frac{2}{3}$
$\frac{1}{3}$ 1100 0.2
365 $\frac{39}{16}$ $\frac{9}{32}$
$\frac{8}{7}$ 0.62 2.25
$\frac{22}{35}$ $\frac{1}{8}$ $\frac{11}{9}$
4.2 36 $\frac{8}{25}$
2.16 50 25
$\frac{13}{30}$ 1.04 225
120 $\frac{2}{15}$ $\frac{2}{3}$
$\frac{1}{3}$ 1100 0.2
365 $\frac{39}{16}$ $\frac{9}{32}$
$\frac{8}{7}$ 0.62 2.25
$\frac{22}{35}$ $\frac{1}{8}$ $\frac{11}{9}$
4.2 36 $\frac{8}{25}$
2.16 50 25
$\frac{13}{30}$ 1.04 225
二、根据比例的意义,在括号里填合适的数。
(
$9:8=$(
(
(
8
):$6=4:3$ $2.5$:(3.75
)$=2:3$ $3:7=7$:($\frac{49}{3}$
)$9:8=$(
1.8
):$1.6$ $\frac{5}{4}$:($\frac{10}{7}$
)$=\frac{5}{8}:\frac{5}{7}$ ($\frac{12}{5}$
):$\frac{2}{3}=6:\frac{5}{3}$(
9
):$9=8$:(8
) $\frac{1}{3}$:(1
)$=3$:(9
) $12$:(9
)$=$(1
):$\frac{3}{4}$答案
二、8 3.75 $\frac{49}{3}$
1.8 $\frac{10}{7}$ $\frac{12}{5}$
9 8 1 9 9 1
(最后六空答案不唯一)
1.8 $\frac{10}{7}$ $\frac{12}{5}$
9 8 1 9 9 1
(最后六空答案不唯一)
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