心算。
| 3.18+1.82= |
97-36= |
4.8-2.9= |
54+9+16= |
| 25×6= |
7.8+0.7= |
0.64+0.4= |
36÷6×5= |
| 6-2.3-2.7= |
39×2×5= |
25+75+18= |
55÷11×4= |
| 3.15×100= |
270÷90= |
25×8= |
33÷11×4= |
| 15×6= |
12×5= |
4-2.5= |
81÷9×8= |
| 3.6+0.8= |
0.93+1.35= |
9.85-0.85= |
53+24-21= |
| 5-1.5= |
0.6+1.73= |
3.7+1.13= |
0.37+0.03-0.1= |
| 180÷5÷4= |
75÷100×1000= |
0.28×100÷10= |
10.38+0.62+2= | |
