Let’s work through this step by step.
We are given three formulas that show how Distance, Speed, and Time are related:
1.
Distance = Speed × Time
2.
Time = Distance ÷ Speed
3.
Speed = Distance ÷ Time
These are not three separate rules — they’re all the same relationship, just rearranged depending on what you’re trying to find.
Think of it like a triangle (as shown in the image):
- If you cover “Distance”, you see “Speed × Time” → so Distance = Speed × Time
- If you cover “Time”, you see “Distance over Speed” → so Time = Distance ÷ Speed
- If you cover “Speed”, you see “Distance over Time” → so Speed = Distance ÷ Time
This is called the “formula triangle” trick — it helps you remember how to rearrange the formula without memorizing all three versions.
✔ Let’s verify with an example:
Suppose you drive at 60 km/h for 2 hours.
→ Distance = Speed × Time = 60 × 2 = 120 km ✔️
Now, if you know you traveled 120 km at 60 km/h, how long did it take?
→ Time = Distance ÷ Speed = 120 ÷ 60 = 2 hours ✔️
If you know you went 120 km in 2 hours, what was your speed?
→ Speed = Distance ÷ Time = 120 ÷ 2 = 60 km/h ✔️
All three formulas give consistent answers — they’re just different ways to use the same information.
So, the key idea is:
You only need to remember
one formula:
>
Distance = Speed × Time
Then, if you need to find Speed or Time, you can rearrange it using basic algebra — or use the triangle visual to help.
Final Answer:
The three equations are different forms of the same relationship: Distance = Speed × Time. You can rearrange it to solve for any one variable if you know the other two.
Parent Tip: Review the logic above to help your child master the concept of speed time and distance worksheets.