题目内容
0.7+5.6=
0.54+0.46=
0.8+0.91=
6.1-1.1=
7.82+1.1=
答案:6.3,1,1.71,5,8.92
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计算,能用简便算法的用简便算法.
2.5
×6.7×0.4=[
]
A .4.5 |
B .3.8 |
C .6.7 |
D .5.45 |
口算
(1)2.4 +7.3= |
(2)6.42 -0.21= |
(3)10.7 -5.7= |
(4)5.4 +5.04= |