5 分数的加法和减法
直接写得数:
=
﹣
= 1﹣
=
=
820+300= 1350﹣350= 47+99= 0×167=
300×4= 24×3= 82÷9= 36÷9=
7×8+3= 9×6﹣6= 8+2×9= 60﹣4×5=
直接写得数.
=
=
=
=
49÷7= 74﹣47= 985×0= 300×4=
300+1070= 48÷5= 4×3+2= 5×8﹣7=
510×7≈ 48×5≈ 397×3≈ 121×4≈
m,比剩下的少
m,这根绳子一共长多少m?
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,比乙数多
,甲、乙两数的和是多少?
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,去海南旅游的占总人数的
,剩下的去青岛旅游,去青岛旅游占总人数的几分之几?
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﹣0.125=
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减去
与
的和,差是多少?
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