直接写出结果．
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(1)0.25×400= |
(2)0.12÷0.6= |
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(3)2 －0.35= |
(4)5.63 ＋4.37= |
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(5)6.8 －1.32－2.68= |
(6)4.14 ＋2.7＋0.86= |
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(7)2.42×10÷0.01= |
(8)25×0.24×0.4= |
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(9)4.56×0÷0.25= |
(10)0.24÷0.8÷0.01= |
计算．
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(1)13x ＋8x= |
(2)2b －1.5b= |
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(3) a＋3a= |
(4)5.7x －3x= |
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(5)x ＋0.5x= |
(6)6x －2.4x= |
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(7)7.5x －2.6x= |
(8)3.6x ＋2x= |
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(9)4x ＋3x－5x= |
(10)9x ＋7x＋2.5x= |
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(11)4 a－3a＋5.6a= |