登录
2. 算一算。
(1) 直接写得数。
0.53+0.4= 7.6-6.7= 5+1.2=
3.26-1.6= 3.82+0.28= 7-3.44=
6.82+1.34= 3.5+2.4= 10-0.01=
(2) 列竖式计算并验算。
7.69+5.38= 10-9.36=
7.35+64.8= 19.02-4.27=
(3) 用小数计算下面各题。
8元4角7分+5元6角 3t50kg+650kg
5m7cm+45cm 4km50m-2km70m
(4) 计算下面各题，能简算的要简算。
8.45+9.18+0.92+1.55 43.25-10.4-3.25
7.86-(5.2-3.69) 5.85+(3.89-2.85 )
(1) 直接写得数。
0.53+0.4= 7.6-6.7= 5+1.2=
3.26-1.6= 3.82+0.28= 7-3.44=
6.82+1.34= 3.5+2.4= 10-0.01=
(2) 列竖式计算并验算。
7.69+5.38= 10-9.36=
7.35+64.8= 19.02-4.27=
(3) 用小数计算下面各题。
8元4角7分+5元6角 3t50kg+650kg
5m7cm+45cm 4km50m-2km70m
(4) 计算下面各题，能简算的要简算。
8.45+9.18+0.92+1.55 43.25-10.4-3.25
7.86-(5.2-3.69) 5.85+(3.89-2.85 )
答案
0.93
0.9
6.2
1.66
4.1
3.56
8.16
5.9
9.99
13.07
0.64
72.15
14.75
=8.47元+5.6元 =14.07元
=3.05t+0.65t
=3.7t
=5.07m+0.45m =5.52m
=4.05km-2.07km =1.98km
=(8.45+1.55)+(9.18+0.92) =10+10.1 =20.1
=43.25-3.25-10.4 =40-10.4 =29.6
=7.86-1.51 =6.35
=5.85-2.85+3.89 =3+3.89 =6.89
