直接写出得数.
2.5+5= | 2-0.25= | 4.1-2.2+1.8= | 9.8-0.08= |
3.3+10.7= | 0.6+1.51-0.51= | 1-0.7= | 10-0.01= |
1.3+0.04+0.7= | 0.35+0.75= | 5.05-0.05= | 2.48-1.48-0.52= |
直接写出得数
13.5-2.75= | 2-= | +0.625= | ×5÷×5= |
×= | 5÷20%= | 5.25×4= | 6--= |
怎样算简便就怎样算.
++ | +++ | -(+) |
2.5+5= | 2-0.25= | 4.1-2.2+1.8= | 9.8-0.08= |
3.3+10.7= | 0.6+1.51-0.51= | 1-0.7= | 10-0.01= |
1.3+0.04+0.7= | 0.35+0.75= | 5.05-0.05= | 2.48-1.48-0.52= |
13.5-2.75= | 2-= | +0.625= | ×5÷×5= |
×= | 5÷20%= | 5.25×4= | 6--= |
++ | +++ | -(+) |