五年級(jí)數(shù)學(xué)上冊(cè) 2.5用計(jì)算器探索規(guī)律習(xí)題 新人教版 試題

1、1. 填表。單價(jià)(元)數(shù)量總價(jià)(元)牙膏3支28.5毛巾8.254塊牙刷5把9.952. 在括號(hào)里填上適當(dāng)?shù)臄?shù)。()711.55()25810124()460.0436()4035.63. 用計(jì)算器，計(jì)算前四題，直接寫出后三題的得數(shù)。(1)343.33.43.3333.43.333333.43.33333333.43.3333333333.43.333333333333.4(2)81988.2988.83988.884988.8885988.88886988.88888794. 先找出規(guī)律，再填數(shù)。(1)1,1.1,1.3,1.6，()，()，3.1(2)0.81,0.64,0.49,0.36

2、，()，()(3)3,1.5,0.75,0.375，()(4)40,10,2.5,0.625，()重點(diǎn)難點(diǎn)，一網(wǎng)打盡。5. 試一試，你會(huì)用計(jì)算器計(jì)算多步計(jì)算題嗎？5.5116.20.50.112.40.250.310.50.46. 根據(jù)33366731001001填空，再用計(jì)算器檢驗(yàn)。3336676_3336679_33366712_33366718_33366724_33366727_舉一反三，應(yīng)用創(chuàng)新，方能一顯身手！7. 用計(jì)算器探索規(guī)律。(1)先用計(jì)算器算出前四個(gè)算式，再根據(jù)規(guī)律直接寫出其他算式的得數(shù)。181128212383123484123458512345686123456787(

3、2)用計(jì)算器算出下面算式的得數(shù)。5325327496496753253211 4964961153253213 4964961353253277 4964967753253291 49649691532532143 4964961435325321001 49649610018. 用計(jì)算器計(jì)算下面各題，并照樣子再編三道題，直接寫出結(jié)果。(101)0.9_(2002)0.9_(30003)0.9_(40004)0.9_ _ _ _第6課時(shí)1. 9.5331.992. 1.6532.43.71112.13. (1)1211.22111.2221111.222211111.22222111111.2222221111111.2222222(2)99.89.879.8769.87659.876549.8765434. (1)22.5(2)0.250.16(3)0.1875(4)0.156255. 0.53.11.550.1553.1102086. 2002002300300340040046006006800800890090097. (1)9989879876987659876549876543(2)略8. 10220333044440(