《五年級下數(shù)學脫式計算》由會員分享,可在線閱讀,更多相關(guān)《五年級下數(shù)學脫式計算(5頁珍藏版)》請在裝配圖網(wǎng)上搜索。
1、45.55-(6.82+15.55) 34.52-17.87-12.23
6.43-(1.4-0.57) 23.75-8.64-3.46
17.83-9.5-7.83-0.5 5.38+88.2-2.38+1.8
27.38-5.34+2.62-4.66 21.63-(8.5+9.63)
7.5-2.45+7.5+2.45 5
2、.09-(0.09+1.23)
9.36-(4.36-3.5) 609-708+306-108+202-198+497-100
9999926+3333322 1917559+678
1.3-3.79+9.7-6.21 80.412.52.5
125(8+0.8+0.08) 35 〔78-(25+38)〕
3.356.42+6.73.6 18.7-3.375-6.625
25
3、1.2532 1.28+9.8+7.72+10.2
12 1951 +122049 0.64257.8+2.2
22.5+2.52 194-64.81.80.9
36.724.259.9 5180-7056
242.4-2.50.8 67115-974
46912+1492 405(3213-3189)
4、
12*(1/2+2/3+5/6) 1.2517.6+36.10.8+2.6312.5
7.5 2.3+1.92.5 1999+999999
75〔138(100-54)〕 80400-(4300+87015)
24078(154-115) 143727+27563
〔75-(12+18)〕15 2160〔(83-79)18〕
32513(266-250) 58870(105+202)
5、
[37.85-(7.85+6.4)] 30 [192-(54+38)]67
[(7.1-5.6)0.9-1.15]2.5 [60-(9.5+28.9)]0.18
20[(2.44-1.8)0.4+0.15] 0.8[(10-6.76)1.2]
25%-695%-12%)*36 3/4*3/5+3/4*2/5
(1-1/4+8/9)/7/9 2/3+1/6/3/24+2/21
1*8/15*3/5 10-3/4/9/10-1/6
[(1/3+1/2)/5/6-1/3]/1/7 2/3/5+3/5/2+3/4