25070210103918

· 33字 · 1分钟
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72×25＝1800 6×143＝858 67＋27＝94
62.82－25.49＝37.33 60.29－54.53＝5.76 17＋(65÷5)＝30
35×59－70＝1995 77.02＋73.87＝150.89 83－67＝16
74.03－65.0＝9.03 (18×4)＋94＝166 156÷3＝52
136×21＝2856 23.88＋11.75＝35.63 92－70＝22
(68÷4)＋25＝42 (23－15)×69＝552 48.37＋63.39＝111.76
30－(27÷9)＝27 59＋(42×16)＝731 65＋33×69＝2342
162÷9＝18 (57－28)×72＝2088 304÷4＝76
$\frac{31}{38}$－$\frac{1}{38}$＝$\frac{30}{38}$ $\frac{9}{51}$＋$\frac{37}{51}$＝$\frac{46}{51}$ $\frac{8}{73}$＋$\frac{8}{73}$＝$\frac{16}{73}$
$\frac{36}{48}$－$\frac{1}{48}$＝$\frac{35}{48}$ $\frac{39}{56}$＋$\frac{16}{56}$＝$\frac{55}{56}$ $\frac{40}{57}$＋$\frac{13}{57}$＝$\frac{53}{57}$
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