直接写出结果．
450÷90= 730﹣280= 70×300= 125×8= 2400÷60=
7200÷25÷4= 416÷70≈ 120÷39≈ 49×5≈ 507×48≈
相关试题
=
÷
= 0.25×3.2×4= 32×（1﹣0.99）=
÷
×
÷
= 1.25×8= 2.9+6.1=
+
=
÷
=
×
= 25÷75=
÷
=
= 5÷
=直接写出得数．
①
×4= ②0.5+1= ③3
×
= ④2﹣0.7=
⑤2÷0.7= ⑥3.5﹣﹣2
= ⑦6×（
+）= ⑧5.5×4+5.5×6=
⑨4
﹣（+1
）= ⑩4
÷4=
直接写出结果．
450÷90= 730﹣280= 70×300= 125×8= 2400÷60=
7200÷25÷4= 416÷70≈ 120÷39≈ 49×5≈ 507×48≈
直接写出得数．
①×4= ②0.5+1= ③3×= ④2﹣0.7=
⑤2÷0.7= ⑥3.5﹣﹣2= ⑦6×（+）= ⑧5.5×4+5.5×6=
⑨4﹣（+1）= ⑩4÷4=
×15= 
=87﹣32= 0.62= 
= 
×
=
﹣
= ．
= 24÷
=
+
= 3.6﹣（1.5+1.6）=
÷1.25=
+
﹣
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