口算题。
80 - 32 = 300 ÷ 5 = 160 × 60 = 530 - 220 =
47 × 20 = 200 - 110 = 55 + 37 = 360 ÷ 12 =
450 ÷ 15 = 8 × 220 = 315 ÷ 7 = 695 - 550 =
770 ÷ 70 = 310 ÷ 5 = 50 × 39 = 460 + 240 =
44 - 34 = 51 ÷ 17 = 5 × 60 = 453 - 153 =
38 + 52 = 110 - 60 = 514 + 61 = 70 × 9 =
55 - 30 = 90 × 40 = 950 - 340 = 94 - 35 =
303 - 200 = 850 ÷ 10 = 550 + 145 = 240 + 30 =
200 × 30 = 42 × 4 = 63 × 7 = 230 × 20 =
83 - 45 = 115 - 36 = 96 ÷ 24 = 935 - 660 =
6 × 60 = 240 ÷ 80 = 510 ÷ 30 = 6 × 42 =
7 × 700 = 15 × 80 = 76 ÷ 19 = 7500 ÷ 500 =
80 - 32 = 300 ÷ 5 = 160 × 60 = 530 - 220 =
47 × 20 = 200 - 110 = 55 + 37 = 360 ÷ 12 =
450 ÷ 15 = 8 × 220 = 315 ÷ 7 = 695 - 550 =
770 ÷ 70 = 310 ÷ 5 = 50 × 39 = 460 + 240 =
44 - 34 = 51 ÷ 17 = 5 × 60 = 453 - 153 =
38 + 52 = 110 - 60 = 514 + 61 = 70 × 9 =
55 - 30 = 90 × 40 = 950 - 340 = 94 - 35 =
303 - 200 = 850 ÷ 10 = 550 + 145 = 240 + 30 =
200 × 30 = 42 × 4 = 63 × 7 = 230 × 20 =
83 - 45 = 115 - 36 = 96 ÷ 24 = 935 - 660 =
6 × 60 = 240 ÷ 80 = 510 ÷ 30 = 6 × 42 =
7 × 700 = 15 × 80 = 76 ÷ 19 = 7500 ÷ 500 =
答案:
48@@60@@9600@@310@@940@@90@@92@@30@@30@@1760@@45@@145@@11@@62@@1950@@700@@10@@3@@300@@300@@90@@50@@575@@630@@25@@3600@@610@@59@@103@@85@@695@@270@@6000@@168@@441@@4600@@38@@79@@4@@275@@360@@3@@17@@252@@4900@@1200@@4@@15
计算下面各题,并利用加、减各部分间的关系进行验算。
256 + 374 = 920 - 265 = 329 + 578 =

385 + 247 = 478 - 199 = 700 - 264 =
256 + 374 = 920 - 265 = 329 + 578 =
385 + 247 = 478 - 199 = 700 - 264 =
答案:
630@@655@@907@@632@@279@@436
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