2012年六年级上册口算过关测试卷

口算过关测试卷 （六年级上册） 一、口算 9 7 ÷ 8 7 = 5÷ 10 11 = 5 2 ÷ 2 3 = 2 1 - 8 1 = 7 5 ÷ 7 1 = 5 4 × 4 7 = 16 11 ÷ 16 11 = 20÷ 9 4 = 3 10 + 8 1 = 0× 5 21 = 8 9 ÷ 8 3 = 5 4 + 15 1 = 5- 4 3 = 8 5 + 16 5 =  6 14 3 13 6 24 26  = 6 1 24 3  = 8× 12 5 = 51 50 3  = 16 1 24 4  = 12 5120 = 3.5× 7 5 =  5 4 15 2 7 1 + 7 5 = 27 8 12 9  = 12 18 3  = 4 3 - 8 1 = 5 3 18 3  = 2 1 - 3 1 =  7 2 7 5 4 3 ×18= 6 5 4 1  = 1－ 2 1  3 1 = 1－（ 2 1 + 3 1 ）= （ 2 1 — 3 1 ） 6 = 1－（ 2 1 ÷ 3 1 ）= 2 3 ×7+ 2 3 ×5= 5 7 × 3 8 + 5 8 × 5 7 = 2 1 × 4 1 - 8 1 = 9 2 3 1 3 2  = 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= 2 1 ∶ 7 5 = 4 1 ∶ 3 1 = 3 1 ∶0.25= 0.6∶ 2 1 =