问题 解答题
31×69=4148÷32=0.102×99=5492÷19=88.4+11.8=
25π=4.9×8.1=2.18+6.89=143÷672=103×59=
0.018×250=
答案

31×69=2139,4148÷32=129.625,0.102×99=10.098,5492÷19=289
1
19
88.4+11.8=100.2,
25π=78.5,4.9×8.1=39.69,2.18+6.89=9.07,143÷672=
143
672
103×59=6077,
0.018×250=4.5.

单项选择题
单项选择题