1 50 题
3.4-1.4= 2
7.82-7.2= 0.62
2.19+9.1= 11.29
10.1-0.89= 9.21
0.68+0.42= 1.1
8.1-5.1= 3
0.728-0.24= 0.968
0.8+0.18= 0.98
0.89-0.25= 0.64
1-0.98= 0.02
0.048+0.52= 0.568
5×400= 2000
19.9+11.1= 31
187÷1000= 0.187
1+3.89= 4.89
0.081×10= 0.81
75÷10= 7.5
0.96÷0.8= 1.2
0.8×7= 5.6
1.5×7= 10.3
1.32×8= 10.56
0.7×8= 5.6
10.3×2= 20.6
5×0.6= 3
0.9×0.3= 0.27
3.5×0.2= 0.7
2.01×0= 0
10×0.05= 0.5
0.13×7= 0.91
0.21×100= 21
0.7×4= 2.8
0.05×4= 0.2
4×0.3= 1.2
430-250= 180
0.17+0.06= 0.23
1.02-0.09= 0.93
7200÷800= 9
0.17+0.6= 0.77
0.83-0.6= 0.23
17×300= 5100
0.98-0.09= 0.89
0.2+0.78= 0.98
600×700= 420000
10.2+0.02= 10.22
0.15+0.7= 0.85
670+250= 920
10.2+0.2= 10.4
9.2-6= 3.2
8500÷500= 17
3.2-3.2= 0