问题 解答题
直接写出得数:
1-0.01=______;
2.1-0.7=______;9.01+2.67=______;8.9+0.1=______;
6.74-5.4=______;0.42+9.58=______;25-0.25=______;12.5-5=______;
4.8-4=______;0.1-0.01=______.
答案

1-0.01=0.99;2.1-0.7=1.4;9.01+2.67=11.68;8.9+0.1=9;
6.74-5.4=1.34;0.42+9.58=10;25-0.25=24.75;12.5-5=7.5;
4.8-4=0.8;0.1-0.01=0.09.
故答案依次为:0.99,1.4,11.68,9,1.34,10,24.75,7.5,0.8,0.09.

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