综合套题八
1、口算
580 ÷ 8 = 821 ÷ 2 =
9.5 - 6.6 = 784 ÷ 2 =
50 × 400 = 301 × 3 =
340 ÷ 2 = 272 × 3 =
112 × 5 = 9.1 + 4.2 =
2、脱式计算
      25 × 2 + 702





      157 + 23 × 6





      (54 + 82) × 5





      (26 + 61) × 3





3、笔算(带**要求验算)
      *199 ÷ 4 =





      55 × 13 =





      213 ÷ 3 =





      17 × 14 =