六年級(jí)數(shù)學(xué)上冊(cè)口算達(dá)標(biāo)檢測(cè)試題（六年級(jí)上冊(cè)）
一、口算
÷ = 5÷1011 = ÷ = - =
÷ = × = ÷ = 20÷ =
310 + = 0× = 89 ÷83 = + =
5- = + = =
= 8× = = =
= 3.5× = + =
= = - = =
- = ×18= =
1－ = 1－（ + ）= （ — ） = 1－（ ÷ ）=
×7+ ×5= × + × = × - = =
二、把下面的比化成最簡(jiǎn)整數(shù)比：
2∶8= 0.2∶1.4= 36∶20= 0.9∶0.72=
∶ = ∶ = ∶0.25= 0.6∶ =
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