$35 + 46 =$ $67 + 33 =$ $97 - 18 =$
$150 - 80 =$ $94 - 50 =$ $27 + 28 =$
$80 + 900 =$ $200 + 300 =$ $93 - 44 =$
$830 - 30 =$ $28 + 11 =$ $48 + 37 =$
$400 + 800 =$ $1000 - 200 =$ $1100 + 500 =$
$73 - 18 =$ $22 + 17 =$ $62 - 35 =$
$26 + 35 =$ $40 + 80 =$ $370 + 30 =$
$87 - 53 =$ $150 - 90 =$ $800 + 600 =$
$19 + 44 =$ $58 + 16 =$ $930 - 30 =$
$840 - 800 =$ $9400 - 9000 =$ $6500 + 300 =$

一、81 100 79
70 44 55
980 500 49
800 39 85
1200 800 1600
55 39 27
61 120 400
34 60 1400
63 74 900
40 400 6800

将下面的竖式改正确。

二、247 339 184