题目内容
算一算.
144.15÷15.5÷0.03 | 21.44÷3.2-1.8 | 39.22÷3.7×2.5 |
106.02÷9.3-1.14 | 6.12÷3.4÷2.5 | 9.36×9÷1.8. |
分析:①同级运算,按照从左向右的顺序计算即可;
②先算除法,再算减法;
③同级运算,按照从左向右的顺序计算即可;
④先算除法,再算减法;
⑤同级运算,按照从左向右的顺序计算即可;
⑥同级运算,按照从左向右的顺序计算即可.
②先算除法,再算减法;
③同级运算,按照从左向右的顺序计算即可;
④先算除法,再算减法;
⑤同级运算,按照从左向右的顺序计算即可;
⑥同级运算,按照从左向右的顺序计算即可.
解答:解:①144.15÷15.5÷0.03
=9.3÷0.03
=310;
②21.44÷3.2-1.8
=6.7-1.8
=4.9;
③39.22÷3.7×2.5
=10.6×2.5
=26.5;
④106.02÷9.3-1.14
=11.4-1.14
=10.26;
⑤6.12÷3.4÷2.5
=1.8÷2.5
=0.72;
⑥9.36×9÷1.8
=84.24÷1.8
=46.8.
=9.3÷0.03
=310;
②21.44÷3.2-1.8
=6.7-1.8
=4.9;
③39.22÷3.7×2.5
=10.6×2.5
=26.5;
④106.02÷9.3-1.14
=11.4-1.14
=10.26;
⑤6.12÷3.4÷2.5
=1.8÷2.5
=0.72;
⑥9.36×9÷1.8
=84.24÷1.8
=46.8.
点评:小数四则运算,先弄清运算顺序,然后再进一步计算,能简算的要简算.
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