5 分数的加法和减法
直接写得数.
256﹣198= 34.6+15.4= 1300﹣497= 0.81+15.3= 6.3÷10%=
÷0.75=
+
=
×
= 1÷3×
= 9×
÷9×
=
直接写得数.
10﹣2.1= 1÷
×
= 2.5×40=
×
×0= 5.2÷0.125÷8=
= 5.6÷0.08=
=
= 1.25÷(10%÷10)=
直接写得数.
+
=
+
=
﹣
= 10﹣4.8﹣3.2=
1﹣
= 0.5×0.2÷0.5×0.2= 1﹣
﹣
=
﹣
=
0.125×0.25×32= 7﹣6.38=
+
= 3.9+6.1﹣3.9+6.1=
我会用喜欢的方法直接写出得数
249﹣157= 1﹣0.28= 1.25×3×8=
=
(
)×56= 2.5×
×0.4= 1﹣1÷
= 2.7×4+6×2.7=
直接写出得数
20×60= 4.8﹣3.9=
﹣
= 1.25×0.8=
÷
= 18÷2%= (
+
)×12=
×
÷
×
=
117÷31≈ 19.685×30.27≈
直接写出得数.
101×1.1= 0.875÷
= 0.7+0.63=
6.75﹣
= 99×66+66=
×0÷
=
(
+
)×24= 5×1.25×16= 0.46+0.54=
12×(
﹣
)= 8×98×125=





千克,第一筐萝卜比第二筐少
千克,要使两筐萝卜一样重,王大伯应从第二筐拿多少千克萝卜到第一筐?
= 0.875÷0.125= 3
﹣
=
+0.75+
+1.25=
﹣
÷0.8= 36×(
+
)=
+
+
= 0.23= 0.23÷1%=
﹣
÷4×
= 2.5+
﹣
)×42= 0.25×
×4=
+
=
=
﹣
+
=
+1=
×
=
﹣
=
×
= 104﹣78=
+
=
=
+
+
+
﹣
+
)
﹣
= (2)1.25×
×0.8= (3)
×4÷4×
=
+
= 2.5﹣0.36﹣0.64=
﹣
= 0.8×4=
+3.75﹣6
,
+
×(52﹣13 )
+
+
+
+
,12×(
+
)×25.
﹣
= 12.5×17×8= 72×(
+
+
+
= (
+
)×14=
+
=
÷8×
+
)=
+
= 8.7﹣4.8= 2.5×7×4= 0.6+99×0.6=
= 1÷3×
=
÷0.25÷4= (
+
)×4=
=
=
=
﹣
=
÷
×
﹣0.75= 0.37×101﹣0.37=
+
=
+
= 0.68÷0.4=
÷
= 1.7﹣0.25﹣
=
+
+
)×90= 80÷25÷4= 1﹣
=
=
=
+
=
)×(
÷7)=
=
+0.5=
+
=
﹣
=
﹣
=
+
﹣
﹣
+
+
﹣(
)
+
+
﹣
+
﹣
.
×
=
÷
=
= 5﹣
=
÷7×
×
= 4.8×11﹣4.8= 1﹣
÷
粤公网安备 44130202000953号