1
$80 - 67 =$ $65 + 35 =$ $89 + 67 - 31 =$
$89 - 45 =$ $89 + 11 =$ $78 + 14 - 53 =$
$50 - 13 =$ $14 + 39 =$ $89 + 67 - 23 =$
$56 - 24 =$ $78 + 19 =$ $17 + (25 - 18) =$
$70 - 61 =$ $69 + 31 =$ $65 + 37 - 53 =$
$55 - 19 =$ $56 + 39 =$ $78 + 56 - 13 =$
$180 - 44 =$ $46 + 27 =$ $71 + (63 - 57) =$
$68 - 59 =$ $65 + 25 =$ $81 + 27 - 31 =$
$57 - 28 =$ $37 + 82 =$ $49 + 18 - 18 =$
$89 - 20 =$ $45 + 15 =$ $99 + 23 - 2 =$
$86 - 27 =$ $67 + 15 =$ $34 + 57 + 87 =$
$99 - 69 =$ $76 + 34 =$ $44 + 51 + 25 =$
$77 - 68 =$ $98 + 12 =$ $102 + 67 + 14 =$
$39 - 28 =$ $109 + 55 =$ $89 + 67 - 73 =$
$97 - 68 =$ $25 + 64 =$ $140 + 69 + 13 =$
$642 ÷ 3 =$ $214 × 6 =$ $96 ÷ (3 × 2) =$
$87 × 5 =$ $390 ÷ 5 =$ $819 ÷ 9 × 3 =$
$79 × 8 =$ $550 × 20 =$ $79 × 9 × 6 =$
$128 × 9 =$ $796 ÷ 4 =$ $65 × 6 ÷ 5 =$

13；100；125
44；100；39
37；53；133
32；97；24
9；100；49
36；95；121
136；73；77
9；90；77
29；119；49
69；60；120
59；82；178
30；110；120
9；110；183
11；164；83
29；89；222
214；1284；16
435；78；273
632；11000；4266
1152；199；78