问题
解答题
口算.
1.5×4=______;
2.6×0.2=______;
6.4+0.08=______;
3.5+7.6=______;
0.12×3=______;
1-0.125=______;
0.4÷0.5=______;
8.1-0.03=______;
4.2×0.1=______;
0.25÷10=______.
答案
1.5×4=6;
2.6×0.2=0.52;
6.4+0.08=6.48;
3.5+7.6=11.1;
0.12×3=0.36;
1-0.125=0.875;
0.4÷0.5=0.8;
8.1-0.03=8.07;
4.2×0.1=0.42;
0.25÷10=0.025.