5 分数的加法和减法
直接写出得数
30×23= 390÷3= 90×80= 14×30=
840÷4= 600÷2= 180÷3= 120×2=
55﹣29= 21×40= 73×10= 42×3=
100÷5= 50×80= 270÷9=
+
=
﹣
=
﹣
=
+
= 1﹣
=
直接写出得数.
50×6= 90÷3= 25×4= 36÷3= 54÷9=
4×600= 96÷4= 24×5= 102×7= 84÷6=
42×2= 72÷3= 150×0= 80×6= 69÷3=
250×4=
=
=
=
=
+
=
+
=
﹣
=
﹣
= 1+
=
+
=
﹣
=
+
=
+
=
﹣
=
+
= 1﹣
=
﹣
=
+
=
+
=
62= 53= 0.125×8=
6.25×13= 28÷56=
列示计算.
(1)有一个数比
少
,这个数是多少?
(2)从1里连续减
和
,差是多少?
(3)一个数是
,另一个数是
,它们的和是多少?
(4)甲数是21,比乙数的4倍多4,求乙数.





+
=
=
﹣
= 54÷9= 8×3+1=
+
=
+
=
﹣
﹣
=
+
+
+
= 12.56÷3.14=
= 5﹣
=
= 0.5×0.5÷5=
=
﹣
=
= 0.4×25﹣10=
=
﹣
=
=
=
+
=
+
+
=
﹣
=
+
=
=
﹣
=
﹣
=
+
=
=
= ②
= ③
= ④
=
= ⑥
= ⑦
= ⑧
=
﹣
﹣
+
+
+
﹣
﹣
+
﹣
.
﹣
=
+
= 3﹣
=
+
=
+
= 1﹣
=
﹣
=
﹣
=
﹣0=
+
=
+
=
+
+
=
+
+
=
﹣
=
+
= 1+
=
﹣
=
=
+
= 1﹣
=
+
+
=
﹣
= 7﹣
﹣
= 8﹣4
=
+
+
+
=
减去
所得的差与
相加,和是多少?
﹣
+
﹣
+
.
米,其中一条长是多少米?
﹣
+
+
5﹣
+
﹣1.
+
=
﹣
= 1﹣
=
+
=
+
=
+
+
=
﹣
=
﹣
=
﹣
= 1﹣
=
+
=
+
=
+
=
= 2﹣
﹣(
)
+
+
+(
﹣
)
﹣
.
﹣
=
﹣
=
+
=
+
=
﹣1=
﹣
=
+
=
﹣
= 1
﹣
﹣
+
5﹣
﹣
﹣(
+
)
+
+
+
+
+
+
+
.




.
=
=
=
=
=
=
=
=
米,底长
米,周长是多少米?
﹣
+
+
﹣
+
+
﹣(
﹣
)
,乙车每次能运它的
,两车每次能运它的几分之几?
+
=
﹣
= 1﹣
=
+
=
﹣
=
+
=
﹣
= 2﹣
=
+
+
= 1﹣
﹣
=
=
=
+
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