| 580+340= | 72-27= | 14×50= | ÷ ×4= | 9981÷48≈ |
2- = | 4× - = | 4×25%= | 9.7-6.8= | 6÷0.1= |
| 解:580+340=920, | 72-27=45, | 14×50=700, | ÷ ×4=2![]() | 9981÷48≈10000÷50=200, |
2- =1 , | 4× - = , | 4×25%=1, | 9.7-6.8=2.9, | 6÷0.1=60. |
分析:根据整数、小数、分数的计算法则计算即可;注意估算的取值.
点评:考查了四则运算,关键是熟练掌握运算顺序和运算法则.
编辑:chaxungu时间:2026-04-27 08:15:07分类:小学数学题库
| 580+340= | 72-27= | 14×50= | ÷ ×4= | 9981÷48≈ |
2- = | 4× - = | 4×25%= | 9.7-6.8= | 6÷0.1= |
| 解:580+340=920, | 72-27=45, | 14×50=700, | ÷ ×4=2![]() | 9981÷48≈10000÷50=200, |
2- =1 , | 4× - = , | 4×25%=1, | 9.7-6.8=2.9, | 6÷0.1=60. |