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1. 直接写出得数。
$10÷0.25=$ $6÷25\% =$ $40×0.5=$ $6÷\frac {18}{19}=$
$2.25+7.64=$ $50×\frac {1}{16}=$ $0÷\frac {5}{9}=$ $186+34=$
$45×10\% =$ $0.84÷7=$ $2667+333=$ $\frac {1}{3}-0.25=$
$0.89×1000=$ $3-1\frac {4}{5}=$ $1÷3\frac {1}{3}=$ $0.2×20\% =$
$\frac {1}{7}+\frac {1}{8}=$ $18×101=$ $0.4^{2}=$ $7.2÷80=$
$\frac {1}{5}×5÷\frac {1}{5}×5=$ $(\frac {1}{6}-\frac {1}{8})×24=$ $\frac {4}{9}×36×\frac {5}{6}=$
$2.8÷2.5÷4=$ $8.6-8.6×\frac {1}{4}=$ $1\frac {4}{5}-\frac {3}{4}×1.2=$
$10÷0.25=$ $6÷25\% =$ $40×0.5=$ $6÷\frac {18}{19}=$
$2.25+7.64=$ $50×\frac {1}{16}=$ $0÷\frac {5}{9}=$ $186+34=$
$45×10\% =$ $0.84÷7=$ $2667+333=$ $\frac {1}{3}-0.25=$
$0.89×1000=$ $3-1\frac {4}{5}=$ $1÷3\frac {1}{3}=$ $0.2×20\% =$
$\frac {1}{7}+\frac {1}{8}=$ $18×101=$ $0.4^{2}=$ $7.2÷80=$
$\frac {1}{5}×5÷\frac {1}{5}×5=$ $(\frac {1}{6}-\frac {1}{8})×24=$ $\frac {4}{9}×36×\frac {5}{6}=$
$2.8÷2.5÷4=$ $8.6-8.6×\frac {1}{4}=$ $1\frac {4}{5}-\frac {3}{4}×1.2=$
答案
$10÷0.25=40$
$6÷25\% =24$
$40×0.5=20$
$6÷\frac {18}{19}=\frac {19}{3}$
$2.25+7.64=9.89$
$50×\frac {1}{16}=\frac {25}{8}$
$0÷\frac {5}{9}=0$
$186+34=220$
$45×10\% =4.5$
$0.84÷7=0.12$
$2667+333=3000$
$\frac {1}{3}-0.25=\frac {1}{12}$
$0.89×1000=890$
$3-1\frac {4}{5}=1\frac {1}{5}$
$1÷3\frac {1}{3}=\frac {3}{10}$
$0.2×20\% =0.04$
$\frac {1}{7}+\frac {1}{8}=\frac {15}{56}$
$18×101=1818$
$0.4^{2}=0.16$
$7.2÷80=0.09$
$\frac {1}{5}×5÷\frac {1}{5}×5=25$
$(\frac {1}{6}-\frac {1}{8})×24=1$
$\frac {4}{9}×36×\frac {5}{6}=\frac {40}{3}$
$2.8÷2.5÷4=0.28$
$8.6-8.6×\frac {1}{4}=6.45$
$1\frac {4}{5}-\frac {3}{4}×1.2=0.9$
$6÷25\% =24$
$40×0.5=20$
$6÷\frac {18}{19}=\frac {19}{3}$
$2.25+7.64=9.89$
$50×\frac {1}{16}=\frac {25}{8}$
$0÷\frac {5}{9}=0$
$186+34=220$
$45×10\% =4.5$
$0.84÷7=0.12$
$2667+333=3000$
$\frac {1}{3}-0.25=\frac {1}{12}$
$0.89×1000=890$
$3-1\frac {4}{5}=1\frac {1}{5}$
$1÷3\frac {1}{3}=\frac {3}{10}$
$0.2×20\% =0.04$
$\frac {1}{7}+\frac {1}{8}=\frac {15}{56}$
$18×101=1818$
$0.4^{2}=0.16$
$7.2÷80=0.09$
$\frac {1}{5}×5÷\frac {1}{5}×5=25$
$(\frac {1}{6}-\frac {1}{8})×24=1$
$\frac {4}{9}×36×\frac {5}{6}=\frac {40}{3}$
$2.8÷2.5÷4=0.28$
$8.6-8.6×\frac {1}{4}=6.45$
$1\frac {4}{5}-\frac {3}{4}×1.2=0.9$
2. 用竖式计算，带☆的要验算。
$4251-1768=$ $86.92+5.59=$ ☆$4.8÷0.75=$
$560×27=$ $154.8÷1.8=$ ☆$32.46-5.98=$
$2.6×5.2=$ $105÷2.5=$ ☆$102.89+0.828=$
$4251-1768=$ $86.92+5.59=$ ☆$4.8÷0.75=$
$560×27=$ $154.8÷1.8=$ ☆$32.46-5.98=$
$2.6×5.2=$ $105÷2.5=$ ☆$102.89+0.828=$
答案
$4251-1768=2483$
$\begin{array}{r}4251\\-1768\\\hline2483\end{array}$
$86.92+5.59=92.51$
$\begin{array}{r}86.92\\+\ \ 5.59\\\hline92.51\end{array}$
☆$4.8÷0.75=6.4$
$\begin{array}{r}6.4\\0.75\enclose{longdiv}{4.80}\\\underline{4.50}\\\ \ \ 300\\\underline{\ \ \ 300}\\\ \ \ \ \ 0\end{array}$
验算：$\begin{array}{r}6.4\\×0.75\\\hline320\\448\\\hline4.800\end{array}$
$560×27=15120$
$\begin{array}{r}560\\×\ 27\\\hline3920\\1120\\\hline15120\end{array}$
$154.8÷1.8=86$
$\begin{array}{r}86\\1.8\enclose{longdiv}{154.8}\\\underline{144}\\\ \ 108\\\underline{\ \ 108}\\\ \ \ \ 0\end{array}$
☆$32.46-5.98=26.48$
$\begin{array}{r}32.46\\-\ \ 5.98\\\hline26.48\end{array}$
验算：$\begin{array}{r}26.48\\+\ \ 5.98\\\hline32.46\end{array}$
$2.6×5.2=13.52$
$\begin{array}{r}2.6\\×5.2\\\hline\ \ 52\\130\\\hline13.52\end{array}$
$105÷2.5=42$
$\begin{array}{r}42\\2.5\enclose{longdiv}{105.0}\\\underline{100}\\\ \ \ 50\\\underline{\ \ \ 50}\\\ \ \ \ 0\end{array}$
☆$102.89+0.828=103.718$
$\begin{array}{r}102.890\\+\ \ \ 0.828\\\hline103.718\end{array}$
验算：$\begin{array}{r}103.718\\-\ \ \ 0.828\\\hline102.890\end{array}$
$\begin{array}{r}4251\\-1768\\\hline2483\end{array}$
$86.92+5.59=92.51$
$\begin{array}{r}86.92\\+\ \ 5.59\\\hline92.51\end{array}$
☆$4.8÷0.75=6.4$
$\begin{array}{r}6.4\\0.75\enclose{longdiv}{4.80}\\\underline{4.50}\\\ \ \ 300\\\underline{\ \ \ 300}\\\ \ \ \ \ 0\end{array}$
验算：$\begin{array}{r}6.4\\×0.75\\\hline320\\448\\\hline4.800\end{array}$
$560×27=15120$
$\begin{array}{r}560\\×\ 27\\\hline3920\\1120\\\hline15120\end{array}$
$154.8÷1.8=86$
$\begin{array}{r}86\\1.8\enclose{longdiv}{154.8}\\\underline{144}\\\ \ 108\\\underline{\ \ 108}\\\ \ \ \ 0\end{array}$
☆$32.46-5.98=26.48$
$\begin{array}{r}32.46\\-\ \ 5.98\\\hline26.48\end{array}$
验算：$\begin{array}{r}26.48\\+\ \ 5.98\\\hline32.46\end{array}$
$2.6×5.2=13.52$
$\begin{array}{r}2.6\\×5.2\\\hline\ \ 52\\130\\\hline13.52\end{array}$
$105÷2.5=42$
$\begin{array}{r}42\\2.5\enclose{longdiv}{105.0}\\\underline{100}\\\ \ \ 50\\\underline{\ \ \ 50}\\\ \ \ \ 0\end{array}$
☆$102.89+0.828=103.718$
$\begin{array}{r}102.890\\+\ \ \ 0.828\\\hline103.718\end{array}$
验算：$\begin{array}{r}103.718\\-\ \ \ 0.828\\\hline102.890\end{array}$
