求教数学题,列综合算式并用递等式计算1.45→+15→x8→÷24→?算式:2.→+23→x3→+190→586算式:3.→÷23→÷13→-51→34算式:4.→-9→x9→+9→÷9→9算式:递等式计算,能巧算的要巧算:1.『80800-9
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 04:09:51
![求教数学题,列综合算式并用递等式计算1.45→+15→x8→÷24→?算式:2.→+23→x3→+190→586算式:3.→÷23→÷13→-51→34算式:4.→-9→x9→+9→÷9→9算式:递等式计算,能巧算的要巧算:1.『80800-9](/uploads/image/z/1107075-3-5.jpg?t=%E6%B1%82%E6%95%99%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E5%88%97%E7%BB%BC%E5%90%88%E7%AE%97%E5%BC%8F%E5%B9%B6%E7%94%A8%E9%80%92%E7%AD%89%E5%BC%8F%E8%AE%A1%E7%AE%971.45%E2%86%92%2B15%E2%86%92x8%E2%86%92%C3%B724%E2%86%92%3F%E7%AE%97%E5%BC%8F%EF%BC%9A2.%E2%86%92%2B23%E2%86%92x3%E2%86%92%2B190%E2%86%92586%E7%AE%97%E5%BC%8F%EF%BC%9A3.%E2%86%92%C3%B723%E2%86%92%C3%B713%E2%86%92%EF%BC%8D51%E2%86%9234%E7%AE%97%E5%BC%8F%EF%BC%9A4.%E2%86%92%EF%BC%8D9%E2%86%92x9%E2%86%92%2B9%E2%86%92%C3%B79%E2%86%929%E7%AE%97%E5%BC%8F%EF%BC%9A%E9%80%92%E7%AD%89%E5%BC%8F%E8%AE%A1%E7%AE%97%2C%E8%83%BD%E5%B7%A7%E7%AE%97%E7%9A%84%E8%A6%81%E5%B7%A7%E7%AE%97%EF%BC%9A1.%E3%80%8E80800-9)
求教数学题,列综合算式并用递等式计算1.45→+15→x8→÷24→?算式:2.→+23→x3→+190→586算式:3.→÷23→÷13→-51→34算式:4.→-9→x9→+9→÷9→9算式:递等式计算,能巧算的要巧算:1.『80800-9
求教数学题,列综合算式并用递等式计算
1.45→+15→x8→÷24→?
算式:
2.→+23→x3→+190→586
算式:
3.→÷23→÷13→-51→34
算式:
4.→-9→x9→+9→÷9→9
算式:
递等式计算,能巧算的要巧算:
1.『80800-900』÷425=?
2.『1850+1690』÷『47+12.』=?
3.72x125=?
求教数学题,列综合算式并用递等式计算1.45→+15→x8→÷24→?算式:2.→+23→x3→+190→586算式:3.→÷23→÷13→-51→34算式:4.→-9→x9→+9→÷9→9算式:递等式计算,能巧算的要巧算:1.『80800-9
1.45→+15→x8→÷24→?
算式:(45+15)x8÷24
=60x8÷24
=20
2.?→+23→x3→+190→586
算式:(586-190)÷3-23
=369÷3-23
=132-23
=109
3.?→÷23→÷13→-51→34
算式:(34+51)x13x23
=85x13x23
=25415
4.?→-9→x9→+9→÷9→9
算式:(9x9-9)÷9+9
=72÷9+9
=8+9
=17递等式计算,能巧算的要巧算:
1.(80800-900)÷425
=79900÷425
=188
2.(1850+1690)÷(47+12)
=3540÷59
=60
3. 72x125
=9x8x125
=9x(8x125)
=9x1000
=9000