奧數(shù)速算題目推薦
1．計(jì)算1.135+3.346+5.557+7.768+9.979=_____.
2.計(jì)算1.996+19.97+199.8=_____.
3.計(jì)算9.8+99.8+999.8+9999.8+99999.8=_____.
4.計(jì)算6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89=_____.
5.計(jì)算1.1+3.3+5.5+7.7+9.9+11.11+13.13+15.15+17.17+19.19=_____.
6.計(jì)算2.894.68+4.686.11+4.68=_____.
7.計(jì)算17.4837-17.4819+17.4882=_____.
8.計(jì)算1.250.322.5=_____.
9.計(jì)算754.7+15.925=_____.
10.計(jì)算28.6767+3.2286.7+573.40.05=_____.
11.計(jì)算172.46.2+27240.38.
12.計(jì)算3.17-2.74+4.7+5.29-0.26+6.3=_____.
13.計(jì)算(5.25+0.125+5.75)8=_____.
14.計(jì)算34.58.23-34.5+2.7734.5=_____.
15.計(jì)算6.250.16+2640.0625+5.26.25+0.62520=_____.
16.計(jì)算0.035935+0.035+30.035+0.07610.5=_____.
17.計(jì)算19.9837-199.81.9+19980.82=_____.
18.計(jì)算13.59.9+6.510.1=_____.
19.計(jì)算0.1250.250.564=_____.
20.計(jì)算11.843-8600.09=_____.
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