11 整理与练习(2)
一、口算。
$62 + 29 =$ $900 \div 50 =$ $72 - 47 =$
$23 \times 50 =$ $37 + 56 =$ $400 \times 90 =$
$630 \div 30 =$ $735 \div 5 =$ $126 \div 9 =$
$84 \times 40 =$ $25 \times 90 =$ $23 + 67 =$
$396 \div 3 =$ $560 \div 70 =$ $160 \times 4 =$
$95 \times 20 =$ $65 - 36 =$ $605 \div 5 =$
$700 + 120 =$ $640 \div 16 =$ $420 \times 3 =$
$270 \times 30 =$ $100 \times 60 =$ $74 - 39 =$
$72 - 39 =$ $150 \div 6 =$ $6 \times 130 =$
$500 \div 5 =$ $80 \times 70 =$ $480 \div 8 =$

一、91 18 25
1150 93 36000
21 147 14
3360 2250 90
132 8 640
1900 29 121
820 40 1260
8100 6000 35
33 25 780
100 5600 60

二、计算下面各题。
$(520 - 432 \div 16) \times 12$ $(368 \div 23 + 45) \times 25$ $988 \div [19 \times (321 - 317)]$

二、5916 1525 13