六年级数学上册口算达标检测试题（六年级上册）
一、口算
÷ = 5÷1011 = ÷ = - =
÷ = × = ÷ = 20÷ =
310 + = 0× = 89 ÷83 = + =
5- = + = =
= 8× = = =
= 3.5× = + =
= = - = =

- = ×18= =

1－ = 1－（ + ）= （ — ） = 1－（ ÷ ）=

×7+ ×5= × + × = × - = =

二、把下面的比化成最简整数比：
2∶8= 0.2∶1.4= 36∶20= 0.9∶0.72=

∶ = ∶ = ∶0.25= 0.6∶ =

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