782.60150=15015=3232300300=2600列豎式計算×××= ××= 4.0＋5.4＋0.98 5.1－1.8－3.2

××13.75－(3.7＋口算32.81.6430018700=400列豎式計算644=360420×××= ×1.3= ×3.8＋2.9＋0.18＋9.1 9.6＋4.8－3.6

×7.14－0.53－2.471927054090=540745736070列豎式計算×××9.63.6＋7.56－2.68

×= ×= ×7.8＋2.34－0.85＋4.66 35.6－1.8－15.6－7.2口算4003508104306.67.61.544800列豎式計算4.3237.8405.2＋2.86－0.66＋1.63

5.1= = 24=13.3－4.68＋2.65 47.8－7.45+8.81.8932.83600750×1284.320.8=55=960列豎式計算×7××1.8395 ×1.823 ×4 口算200= 420= 142600.02= 66030=480=4=列豎式計算7×= ×7= 9.65= 33.7×3.5＋6.28×3.5 36.－3.9－6.12

×252542.5－(6.0＋56012865.48－(9.－0.52)0.6321=6400800=0.0520=514816=7035=9.22.3=2.70.3=列豎式計算0.7= 5.76= 0.45= = 7.05= = 73.－1.64－13.8－5.36 66.8－8.66－1.34 0.2516.24口算1.50.4= 280.03= 0.3819= 0.68402= 65013= 98014= 680列豎式計算14= = 0.2412.6= = 39.68= = ×4.×7.8＋78×0.52 3.6102 6.4×0.25＋3.6÷47204=6000.03=80016=16040=7200.5=0.2330=501.2=230列豎式計算170.3632.613＋4.9－0.9

21×4.－4.8×0.5

×(1.2－0.125×8口算330030=96004000500=25001.4300=列豎式計算0.26×200=0.50560××7.7×4.23.5

×3201.258

×18.76×9.9＋18.761500300=0.05200=72009=0.1820=4.50250=0.690.30.1=列豎式計算××4.7= = ××= ×= 4.8100.1 56.5×9.9＋56.5 7.09×10.8－0.8×7.09口算04606.80.687200996053500.212.58124+24=5.625.6=列豎式，計算保留一位小數≈ ≈ ≈ ≈ ≈ ≈ 3.522.50.4 4.78÷0.2＋3.44 3.9－4.1＋6.1－5.9口算6.37(84+16)50—3542039910－19＝×＝列豎式，計算保留2位小數7≈37.2÷42≈ ≈ 0.494 ××

3.0.2口算22×200＝8800÷400＝9300÷300＝6×300＝1800÷200＝1000－51＝2400÷200＝4000÷80＝列豎式計算1.57÷3.9≈ 0.13÷0.17≈ 3.27÷8.5≈3.69÷1.7≈ 62÷29≈ 61÷3≈1÷4≈ 25.5÷9≈ 16.3÷2≈5.63.5 9.60.80.4

4.2×99＋4.2口算3.－7.82－2.19＋10.1－0.6＋8.1－0.7280.＋列豎式計算7××128753.6510.1

9.633.6－3.6×0.8

615.20.254口算1－0.048＋519.9+11.1=1871000=1+3.89=0.08110=7510=列豎式計算4784581

7.2

5=0.89×100.1 146.5－(23＋46.5)

17.8÷(1.78×4)0.×7＝1.5×7＝1.32×8＝0.7×8＝10.×2＝列豎式計算15×5×0.＝×0.9×0.3＝××3.5×0.2＝480905.8×2＋4.27

48(45.－32.7÷8÷0.125

×6409.7×99＋9.7口算2.0×0＝10×0.05＝0.13×7＝0.21×100＝0.×4＝列豎式計算×0.05×4＝×4×0.3＝12.5×8＝7.7×0.65101

×27.5×3.7－7.5×3.7

×8.542.50.42.×4＝3.25×0＝0.4×50＝30×0.1＝2.×3＝4.1×2＝0.35×0.2＝7.5×0.1＝列豎式計算0.75.760.45= = 7.05= = 4.3612.58 15.×13.1－15.6 15.62.1口算10.08＝3.5×0.01＝1.25÷