15道小数加减,脱式计算,一半简便另一半不简便
第1个回答 2017-06-05
小数加减法:
1.8+3.9=
3.7+8.4=
5.6+1.4=
2.9+4.5=
2.8+4.7=
脱式计算:
4.6+2.7-3.1
31.7+2.3+4.9
28.1-3.9+1.6
36.6-2.4-1.9
3.4+1.6+2.9
简便计算:
(9.6+10.4)+1.1
10+9.6+10+0.4
=
=
9.4+10.6-10
1.4+1.4+2.2
56.8+43.2-10本回答被网友采纳
1.8+3.9=
3.7+8.4=
5.6+1.4=
2.9+4.5=
2.8+4.7=
脱式计算:
4.6+2.7-3.1
31.7+2.3+4.9
28.1-3.9+1.6
36.6-2.4-1.9
3.4+1.6+2.9
简便计算:
(9.6+10.4)+1.1
10+9.6+10+0.4
=
=
9.4+10.6-10
1.4+1.4+2.2
56.8+43.2-10本回答被网友采纳