直接写得数．
| ⑴12.5×8= |
⑵6.4+4.6= |
⑶4.4×20= |
⑷4.18×1000= |
| ⑸6﹣0.7= |
⑹0.04×0.3= |
⑺3﹣2.01= |
⑻6.2+0.04= |
计算如图图形中∠A的度数．
计算下面各题，能简算的要简算．
⑴0.9+1.08+0.92+0.1
⑵32.54﹣10.46﹣4.54
⑶18.73+3.85﹣2.73
⑷45.6﹣（83.7﹣78.8）
用竖式计算并验算．
⑴5.84+26.36=
⑵10.25﹣9.68=
⑶20﹣12.39=
⑷15.8+16.28=
口算．
| ⑴0.9+0.4= |
⑵9﹣0.7= |
⑶0.36+0.54= |
⑷1﹣0.26= |
| ⑸3.6+0.4= |
⑹1.29﹣0.29= |
⑺0.74+0.26= |
⑻0.57﹣0.5= |
| ⑼2.8+1.12= |
⑽6.2+1.8= |
⑾2.8﹣2.3= |
⑿1.3﹣0.6= |