= | 4+3%= | 2.15-(1.15-0.15)= | = |
| 50%×(2.9-2.7)= | = | 1÷ - ÷1 | = |
= | ×( )= | = | 2-150%= |
=1, | 4+3%=4.03, | 2.15-(1.15-0.15)=1.15, | =7 , |
| 50%×(2.9-2.7)=0.1, | = , | 1÷ - ÷1=2 , | = , |
= , | ×( )= , | = , | 2-150%=0.5. |
分析:根据分数和小数加减乘除的计算方法进行计算即可.
点评:口算时,注意运算符号和数据,然后再进一步计算即可.
编辑:chaxungu时间:2026-04-26 08:20:58分类:小学数学题库
= | 4+3%= | 2.15-(1.15-0.15)= | = |
| 50%×(2.9-2.7)= | = | 1÷ - ÷1 | = |
= | ×( )= | = | 2-150%= |
=1, | 4+3%=4.03, | 2.15-(1.15-0.15)=1.15, | =7 , |
| 50%×(2.9-2.7)=0.1, | = , | 1÷ - ÷1=2 , | = , |
= , | ×( )= , | = , | 2-150%=0.5. |
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