小数
练习2.7
问题1:找到以下值:
- “0.4 ÷ 2”
答:' 0.4 ÷ 2 = 0.2 ' - ' 0.35 ÷ 5 '
答:' 0.35 ÷ 5 = 0.07 ' - “2.48 ÷ 4”
答:' 2.48 ÷ 4 = 0.62 ' - “65.4 ÷ 6”
答:' 65.4 ÷ 6 = 10.9 ' - “651.2 ÷ 4”
答:' 651.2 ÷4 = 162.8 ' - “14.49 ÷ 7”
答:' 14.49 ÷ 7 = 2.07 ' - “3.96 ÷ 4”
答:' 3.96 ÷ 4 = 0.99 ' - “0.80 ÷ 5”
答:' 0.80 ÷ 5 = 0.16 '
问题2:找到以下值:
- 4.8 ÷ 2
答:' 4.8 ÷ 2 = 2.4 ' - 52.5 ÷ 10
答:' 52.5 ÷ 10 = 5.25 ' - 0.7 ÷ 10
答:' 0.7 ÷ 10 = 0.07 ' - 33.1÷10
答:' 33.1 ÷10 = 3.31 ' - 272.23 ÷ 10
答:' 272.23 ÷ 10 = 27.223 ' - 0.56÷10
答:' 0.56 ÷10 = 0.056 ' - 3.97 ÷ 10
答:' 3.97 ÷ 10 = 0.397 '
问题3:找到以下值:
- 2.7 ÷ 100
答:' 2.7 ÷ 100 = 0.027 ' - 0.3 ÷ 100
答:' 0.3 ÷ 100 = 0.003 ' - 0.78 ÷ 100
答:' 0.78 ÷ 100 = 0.0078 ' - 432.6 ÷ 100
答:' 432.6 ÷ 100 = 4.326 ' - 23.6÷100
答:' 23.6 ÷100 = 0.236 ' - 98.53÷100
答:' 98.53 ÷100 = 0.9853 '
问题4:找到以下值:
- 7.9 ÷ 1000
答:' 7.9 ÷ 1000 = 0.0079 ' - 26.3 ÷ 1000
答:' 26.3 ÷ 1000 = 0.0263 ' - 38.53÷1000
答:' 38.53 ÷1000 = 0.03853 ' - 128.9÷1000
答:' 128.9 ÷1000 = 0.1289 ' - 0.5÷1000
答:' 0.5 ÷1000 = 0.0005 '
问题5:找到以下值:
- 7÷3.5
答:' 7 ÷3.5 = 2 ' - 36÷0.2
答:' 36 ÷0.2 = 180 ' - 3.25÷0.5
答:“3.25 ÷0.5 = 6.5” - 30.94÷0.7
答:' 30.94 ÷0.7 = 44.2 ' - 0.5÷0.25
答:' 0.5 ÷0.25 = 2 ' - 7.75÷0.25
答:' 7.75 ÷0.25 = 31 ' - 76.5 ÷ 0.15
答:' 76.5 ÷ 0.15 = 510 ' - 37.8 ÷ 1.4
答:' 37.8 ÷ 1.4 = 27 ' - 2.73÷1.3
答:' 2.73 ÷1.3 = 2.1 '
问题6:一辆汽车用2.4升汽油行驶43.2公里。一升汽油能跑多远?
答:距离的计算方法如下:
43.2 ÷ 2.4 = 18千米