÷3= | + = | 1.25×16= | 342-99= | 45×30%= |
× = | 0.01×27= | 9.6÷0.25÷4= | ( + - )×24= | 1.9+1.1-1.9+1.1= |
解: ÷3= , | + =1 , | 1.25×16=20, | 342-99=243, | 45×30%=13.5, |
× = , | 0.01×27=0.27, | 9.6÷0.25÷4=9.6, | ( + - )×24=2, | 1.9+1.1-1.9+1.1=2.2. |
分析:横向数:(1)(2)(5)(6)依据分数四则运算计算方法解答,
(3)(7)(10)依据小数四则运算计算方法解答,
(4)依据减法性质解答,
(8)依据除法性质解答,
(9)运用乘法分配律解答.
点评:本题考查知识点:(1)四则运算计算方法,(2)简便算法运用.
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