The order of teaching math topics in fifth grade may vary depending on the curriculum and teaching method used, but in general, a good starting point for teaching math in fifth grade would be:

1. Basic multiplication and division facts and strategies
2. Place value and number sense up to 1,000,000
3. Basic operations (addition, subtraction, multiplication, and division) with whole numbers and decimals
4. Fractions (including adding, subtracting, multiplying, and dividing mixed numbers)
5. Measurement and time (including conversions between units and time zones)
6. Geometry and shapes (including perimeter, area, volume, and coordinate grids)
7. Basic algebraic concepts (including solving simple equations and graphing linear equations)
8. Data analysis and probability (including mean, median, mode, range, and probability)
9. Basic geometry concepts (angles, points, lines, planes, and symmetry)
10. Rounding and estimation
11. Basic concepts of Ratio and Proportion
12. Basic concepts of Measurement in geometry(circumference, area of complex shapes)
13. Basic concepts of volume and capacity
14. Basic concepts of mass and weight
15. Basic concepts of temperature
16. Long division, multi-digit multiplication and basic concepts of Algebra
17. Prime and composite numbers, factors, and multiples
18. Problem-solving and reasoning
19. Graphing and data interpretation
20. Mental Maths
21. Geometry in 2D and 3D, including symmetry and transformations.
22. Basic concepts of statistics
23. Basic concepts of scientific notation