一、在$□$里填合适的数。
$□ - 70 = 25$ $□ + 9 = 24$
$□ + 80 = 98$ $2 + □ = 70$
$□ - 9 = 80$ $75 - □ = 55$
$10 + □ = 69$ $2 + □ = 90$
$□ + 8 = 26$ $□ - 70 = 8$
$□ - 40 = 33$ $□ + 10 = 27$
$40 + □ = 74$ $□ + 4 = 31$
$□ - 6 = 53$ $□ - 20 = 5$
$59 - □ = 52$ $□ + 30 = 67$
$□ + 6 = 45 - 5$ $39 - □ = 18 - 9$
$□ - 5 = 70 + 18$ $50 - 4 = 40 + □$
$□ + 80 = 95 - 6$ $□ - 8 = 32 + 7$
$14 - □ = 55 - 50$ $41 - □ = 62 - 30$
$47 + 7 = □ - 7$ $58 + 30 - □ = 80$
$91 - 30 - □ = 52$ $32 - 6 - □ = 20$

一、95 15
18 68
89 20
59 88
18 78
73 17
34 27
59 25
7 37
34 30
93 6
9 47
9 9
61 8
9 6