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· 33字 · 1分钟
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63-16=47 30×(48-31)=510 49-(36÷2)=31
12.45+58.37=70.82 (80÷4)+16=36 108÷3=36
45.09+64.58=109.67 80.64-52.43=28.21 51×9+15=474
153÷3=51 90-63=27 (89×14)+36=1282
98-(95÷5)=79 (33÷3)+12=23 696÷8=87
32.93+98.54=131.47 85-32=53 180×41=7380
25÷5-3=2 384÷8=48 95-(68÷4)=78
99×83=8217 92.5-85.27=7.23 54.35-39.23=15.12
$\frac{63}{64}$+$\frac{1}{64}$=1 $\frac{6}{14}$+$\frac{8}{14}$=1 $\frac{47}{68}$-$\frac{10}{68}$=$\frac{37}{68}$
$\frac{56}{61}$+$\frac{5}{61}$=1 $\frac{40}{41}$-$\frac{1}{41}$=$\frac{39}{41}$ $\frac{16}{44}$+$\frac{11}{44}$=$\frac{27}{44}$