5 分数的加法和减法
直接写得数
+
= 390÷3= 1﹣
= 1200×4= 91﹣24=
260+99= 230×40=
+
= 270×(35÷35)= 540÷3÷2=
2
+1
9
﹣5
6﹣4
4
﹣3
9
﹣3
4
﹣2
1
﹣0.45+
3
+4.25﹣
2
+3.75﹣1
6.875+(4.5﹣1
) 6.94﹣(4.94+1
) 4
﹣1
﹣0.2.
0.36÷1.2= 0.78﹣0.3= 3.7×2= 0.4×0.5=
0.39+0.61= 10﹣7.2= 0.88÷1.1= 0.75×4=
11﹣1.5= 2.48÷4= 7.8﹣0.38= 2.8×5=
4×10.1= 4×0.25= 3.2+1.6= 10.6﹣5.2=
0.32+1.68= 0.8×125= 7.28÷7= 4.8+39=
43÷0.01= 0.4÷2= 1.3×60= 1.5×0.04=
1.53﹣0.7= 1.5﹣0.6= 0.3÷1.5= 95÷19=
0.65+4.35= 14﹣7.4= 11.2﹣9.8=
﹣
=
﹣
=
+
=
﹣
=
+3=
+
=
+
=
﹣
=
+
=
1﹣
=
+
=
+
=
﹣0=
﹣
= 1﹣
= 0+
=
﹣
=
+
=
﹣
=
+
=
+
+
=
+
﹣
=
+(
﹣
)= 0.9×1.25×8= 5.85+1.37+4.25=
0.43×10+57= 62﹣2.8﹣1.2= 2.7×3÷2.7×3= 0.8×0.5×1.25=





,第二天看了全书的
,还剩全书的几分之几没有看?
﹣
+
;
﹣(
+
);
+
﹣
;
+
﹣
+
;
﹣
+
+
﹣
+
+
.
.
,第二天插了全部的
,剩下的第三天上午插完,第三天上午要插全部水田的几分之几?
﹣
﹣(
+
)
+
﹣
+0.4+0.6.
=
=
=
=
=
=
=
=
=
=
=
=
,第二次倒出它的
,还剩这瓶饮料的几分之几?
=
﹣
=
=
+
= 1﹣
﹣
=
+
=
+
=
﹣
=
+
+
=
﹣
+
﹣
+
﹣
﹣(
﹣
)
.
吨,其它钢材
吨,这批钢材共有多少吨?
﹣
+
+
﹣
1﹣
﹣
﹣(
﹣
)
+
+
2
﹣
﹣
+
﹣
﹣
7
+
+
+
+0.5+
.
=
+
=
=
=
=
﹣
=
=
=
﹣
﹣
+
+
+
+
﹣(
+
)
+
﹣
(2)1﹣
﹣
(3)
﹣
+
+
+
(5)
(6)
+
﹣
﹣(
﹣
)
+
(要简算)
= ,
﹣
= ,
= ,
= ,
﹣
= .
+
+
+
+
+
.


.
+
=
×0÷
﹣
)×22=
×
×
=
﹣0=
﹣(
)=
×4÷7= 1﹣
=
+
= 1﹣
÷
=
×5= 55×
÷
=
﹣
﹣
=
×
×15=
=

+
)]×24
.
×5.16+516%×
(
﹣
)÷(
×
)
×
×
+
+
+6.1
÷(
+
×
)
×(0.65+
)÷
.
=
=
=
=
= 2
=
=
×5+
+
= ⑥1﹣
=
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