5 分数的加法和减法
直接写出得数.
0.83+0.27= 2.9×100= 50÷1000=
×10=0.7 80÷ =0.8
+
=
5.6+4= 0.13×1000=
﹣0.35=
57+28= 0.12×1000= 240﹣170= 13×0.4= 69÷23=
0.8×0.5= 0.24÷2= 4.6+3.9= 303÷3= 23÷24=
0.049÷10= 105﹣99=
+
=
+
=
﹣
=
2﹣
= 0.2÷
= 41×82=
6+17= 156﹣156= 4500÷9= 41+18= 3600÷30=
57+43= 48÷12= 1.8+3.5= 7﹣3.8= 35×60=
35×10= 1500÷10= 0÷46.79= 1.5÷5= 8÷5=
+
=
+
= 1﹣
= 
﹣
=
3﹣
=
×2=
×
=
÷
= 40×80=
80﹣17 32×20 75﹣69= 13×5= 8.7﹣2.4=
2000+400= 1.4×100= 1.2÷100= 124.6×1= 7.256÷7.256=
1.2÷0.2= 24×10%=
+0.5= 2+
=
+
=
÷2=
÷
=
×0.2=
口算
5×0.9= 0.42÷7= 0.4÷8= 3.9×0=
86÷0.1= 30×0.05= 20+12.3= 54÷0.9=
6.3÷0.7= 9.54+0.46= 10﹣0.1= 1.5﹣0.01=
0.8×6= 3.8×0.5= 45÷0.45= 1.3+0.7=
+
=
+
= 1﹣
=
﹣
=





= 7﹣2
= 1
+0.8= 1.2﹣
=
= 2.75+7
= 8.25﹣
=
﹣
=
﹣0.45+3
15﹣4
+6
6
+0.65+
+
+8
) 2
﹣0.8+(0.25﹣
)
﹣
=
﹣
+
= 1﹣
=
+
=
﹣
=




.
+
= 1﹣
=
﹣
= 2.5×3.8×4=
+
= 10﹣9.12=
+0.25= 0.65×9+0.65=
=
=
=
=
= 1﹣
= 1﹣
=
=
+
=
﹣
=
+
=
﹣
=
﹣
= 
=
=
=
=.
﹣
=
﹣
=
﹣
=
+
=
+
=
﹣
=
+
=
﹣
+
=
﹣
+
=
=
﹣
=
+
=
+
=
+
+
=
﹣
=
+
= 3﹣
﹣
=
= 0.25×12=
=
= 4.8÷0.1=
=
=
+
= 1﹣
= 360÷6= 20×7= 79×2=
+
=
﹣
=
﹣
=
+
=
+
=
﹣
﹣
=
=
+
=
﹣1= 2+
=
﹣
﹣
+
﹣
﹣(
﹣
)
+
+
+
﹣
= 1﹣
= 4×0.25= 53=
+
.
、
、
、
,去年超额完成全年计划的几分之几?
千克放入第二筐,则两筐苹果重量相等,两筐苹果共重多少千克?
﹣
= 3.6×
=
÷
= a×0=
﹣
×
= 16×5= 1÷0.25=
+
= 12+0.8=


.
,获二、三等奖的占获奖人数的
,获二等奖的占获奖人数的几分之几?
+99
+999
+
×3=
﹣
=
﹣
=
+
)= 1﹣
÷
+
= 2﹣
= 1﹣
+
=
× =1.
=
=
=
=
=
=
=
=
=
=
是多少?
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