一、直接写出得数
14×500=7000280÷280=12400÷80=30198+36=234
250×400=10000096÷6=16900÷10=9080÷16=5
125×24=300024×5=12025×9×4=90081×7+19×7=700
357-135-65=157465+212+188=86538+72+62=172
25×3+25=10049×0×27=0135+45+65=245
二、用简便方法计算
180+274+126+120
=(180+120)+(274+126)
=300+400
=700
125×6×50×8
=(125×8)×(6×50)
=1000×300
=300000
184-35-65
=184-(35+65)
=184-100
=84
135×37+65×37
=37×(135+65)
=37×200
=7400
101×798-798
=798×(101-1)
=798×100
=79800
104×25
=(100+4)×25
=100×25+4×25
=2500+100
=2600
700÷25÷4
=700÷(25×4)
=700÷100
=7
(180+80)×25
=180×25+80×25
=4×25×45+2000
=4500+2000
=6500
25×32
=25×4×8
=100×8
=800
700÷25×4
=28×4
=112
1700÷(25×17)
=1700÷17÷25
=100÷25
=4