用简便方法计算。
|
| (1)原式=0.48+2.52+3.79+6.21 =3+10 =13 |
(2)原式=64.25-(3.14+8.86) =64.25-12 =52.25 |
| (3)原式=44.09-11.09-16.23 =33-16.23 =16.77 |
(4)原式=158.73-58.73+36.8 =100+36.8 =136.8 |
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(2)两个一位小数相加,和是两位小数。[ ]
(3)35+0.65 =100[ ]
(4)1.25米+17.3分米=18.55分米[ ]
[ ]
a.25.58[ ]
a.1.5