1. 直接写出得数。(每题 1★)
$81 - 64 = $ $86 - 44 = $ $34 + 21 = $
$62 + 25 = $ $36 + 31 = $ $82 - 3 = $
$99 - 94 = $ $95 - 52 = $ $79 - 26 = $
$67 + 13 = $ $22 + 75 = $ $98 - 42 = $
$58 - 24 = $ $71 - 2 = $ $49 + 1 = $
$45 + 14 = $ $73 + 18 = $ $8 + 56 = $
$91 - 5 = $ $4 + 59 = $ $88 - 12 = $
$96 - 66 = $ $84 - 55 = $ $15 + 53 = $
$33 + 65 = $ $89 - 16 = $ $28 + 43 = $
$61 - 7 = $ $23 + 54 = $ $9 + 72 = $
$87 - 35 = $ $27 - 9 = $ $80 - 59 = $
$17 + 41 = $ $78 + 6 = $ $51 + 32 = $

17 42 55 87 67 79
5 43 53 80 97 56
34 69 50 59 91 64
86 63 76 30 29 68
98 73 71 54 77 81
52 18 21 58 84 83

2. 列竖式计算。(每题 3★)
$73 - 6 = $ $46 + 44 = $ $50 - 18 = $
$62 + 21 = $ $85 - 36 = $ $59 + 27 = $

67 90 32
83 49 86(竖式略)