题目内容
脱式计算 6.4×2.4+3.6 |
3.053-0.1×5.3 |
213.6÷0.8÷0.03 | 135.96-9.1×5.6 |
15.6÷1.3×0.37 | 32.84×2.6+3.46. |
分析:(1)(6)先算乘法,整数加法;
(2)(4)先算乘法,整数减法;
(3)(5)从左往右依次计算.
(2)(4)先算乘法,整数减法;
(3)(5)从左往右依次计算.
解答:解:(1)6.4×2.4+3.6
=15.36+3.6
=18.96;
(2)3.053-0.1×5.3
=3.053-0.53
=2.523;
(3)213.6÷0.8÷0.03
=267÷0.03
=8900;
(4)135.96-9.1×5.6
=135.96-50.96
=85;
(5)15.6÷1.3×0.37
=12×0.37
=4.44;
(6)32.84×2.6+3.46
=85.384+3.46
=88.844.
=15.36+3.6
=18.96;
(2)3.053-0.1×5.3
=3.053-0.53
=2.523;
(3)213.6÷0.8÷0.03
=267÷0.03
=8900;
(4)135.96-9.1×5.6
=135.96-50.96
=85;
(5)15.6÷1.3×0.37
=12×0.37
=4.44;
(6)32.84×2.6+3.46
=85.384+3.46
=88.844.
点评:考查了小数的四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
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