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一、口算。
$27\% +38\% =$
$\frac {8}{9}×60\% =$
$6.4+16\% =$
$314÷100\% =$
$30\% ×2.1=$
$28\% -0.1=$
$0.32×200=$
$27\% +38\% =$
0.65
$3.4÷0.34=$10
$3.07+1.93=$5
$\frac {8}{9}×60\% =$
$\frac{8}{15}$
$4.2×20\% =$0.84
$72\% ÷9\% =$8
$6.4+16\% =$
6.56
$2.5×100\% =$2.5
$\frac {4}{5}×45\% =$$\frac{9}{25}$
$314÷100\% =$
314
$3.35+3.55=$6.9
$3.5\% ×0.8=$0.028
$30\% ×2.1=$
0.63
$3.4-2.11=$1.29
$3.6-36\% =$3.24
$28\% -0.1=$
0.18
$4\% ×2=$0.08
$93\% ÷3.1\% =$30
$0.32×200=$
64
$40\% ×\frac {3}{8}=$$\frac{3}{20}$
$1.2\% ×60\% =$0.0072
答案
一、0.65 10 5
$\frac{8}{15}$ 0.84 8
6.56 2.5 $\frac{9}{25}$
314 6.9 0.028
0.63 1.29 3.24
0.18 0.08 30
64 $\frac{3}{20}$ 0.0072
$\frac{8}{15}$ 0.84 8
6.56 2.5 $\frac{9}{25}$
314 6.9 0.028
0.63 1.29 3.24
0.18 0.08 30
64 $\frac{3}{20}$ 0.0072
二、计算下面各题。
$2000+4000×2.25\%$ $5500×(1+2.82\% )$ $32000×5.85\% ×3+32000$
$\frac {3}{7}×125\% +1.25×\frac {4}{7}$ $11×(\frac {4}{11}+87.5\% )×8$ $10000×(1+1.5\% )^{2}$
$2000+4000×2.25\%$ $5500×(1+2.82\% )$ $32000×5.85\% ×3+32000$
$\frac {3}{7}×125\% +1.25×\frac {4}{7}$ $11×(\frac {4}{11}+87.5\% )×8$ $10000×(1+1.5\% )^{2}$
答案
二、2090 5655.1 37616
1.25 109 10302.25
1.25 109 10302.25
