北京市朝阳区2010年小学二年级下册数学口算

如题所述

以下是北京市朝阳区2010年小学二年级下册数学口算部分的题目和解答:



    1100 - 800 = 300
    67 + 23 = 90
    73 - 63 = 10
    56 ÷ 9 = 6...2
    420 - 300 = 120
    560 + 60 = 620
    77 - 56 = 21
    47 ÷ 9 = 5...2
    360 - 100 = 260
    50 + 250 = 300
    63 ÷ 7 = 9
    8000 - 4000 = 4000
    340 - 80 = 260
    7 × 8 = 56
    25 ÷ 5 = 5
    45 + 15 = 60
    880 - 800 = 80
    7200 - 200 = 7000
    7 - 28 = -21
    84 - 29 = 55
    250 + 70 = 320
    25 ÷ 4 = 6...1
    28 + 68 = 96
    44 + 26 = 70
    350 - 60 = 290
    60 - 21 = 39
    97 - 70 = 27
    64 ÷ 9 = 7...1
    84 - 29 = 55
    12 + 69 = 81
    260 + 40 = 300
    68 ÷ 8 = 8...4
    280 + 500 = 780
    310 - 80 = 230
    290 - 60 = 230
    33 ÷ 7 = 4...5
    47 ÷ 5 = 9...2
    380 + 50 = 430
    520 + 80 = 600
    73 ÷ 8 = 9...1
    240 + 50 = 290
    250 + 90 = 340
    800 - 40 = 760
    64 - 29 = 35
    63 + 26 = 89
    80 + 80 = 160
    85 - 36 = 49
    72 + 28 = 100
    350 + 200 = 550
    86 - 44 = 42
    56 ÷ 6 = 9...2
    27 ÷ 8 = 3...3
    33 + 38 = 71
    8 × 6 = 48
    380 - 70 = 310
    95 - 28 = 67
    44 ÷ 6 = 7...2
    260 + 40 = 300
    35 ÷ 5 = 7
    32 ÷ 8 = 4
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