一、口算。
$14×60= $
$134+56= $
$363÷11= $
$423-44= $
$25×8= $
$504÷4= $
$270+36= $
$291÷3= $
$4800÷6= $
$560÷8= $
$14×60= $
840
$102×3= $306
$1600÷80= $20
$134+56= $
190
$480÷5= $96
$150×4= $600
$363÷11= $
33
$72×7= $504
$36×20= $720
$423-44= $
379
$45+85= $130
$700÷14= $50
$25×8= $
200
$150÷2= $75
$402×5= $2010
$504÷4= $
126
$320÷16= $20
$65×20= $1300
$270+36= $
306
$198-99= $99
$105×7= $735
$291÷3= $
97
$15×40= $600
$42+68= $110
$4800÷6= $
800
$71-25= $46
$68+15= $83
$560÷8= $
70
$200×8= $1600
$600÷6= $100
答案
一、840 306 20
190 96 600
33 504 720
379 130 50
200 75 2010
126 20 1300
306 99 735
97 600 110
800 46 83
70 1600 100
190 96 600
33 504 720
379 130 50
200 75 2010
126 20 1300
306 99 735
97 600 110
800 46 83
70 1600 100
二、计算下面平行四边形的面积。

答案
二、$63×25=1575(m^{2})$
$26×12=312(dm^{2})$
$26×12=312(dm^{2})$
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