Spee

Which is Less Time - Changed Both Units (Level 2)

This math topic focuses on comparing times taken by different moving entities based on their speeds and the distances they travel, with a complexity that involves unit conversions. Problems involve various moving subjects like bacteria, bugs, horses, and cars moving over specific distances at given speeds, all presented in different units of measurement (e.g., cm/hr, mm/d, m/s). The task is to determine which subject takes less time to complete their journey, enhancing skills in speed, distance, and time calculations along with unit conversions.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

more
View Unit

Which is Less Time - Changed Both Units

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.


Bug A crawls at 7.5dm/hr and goes 30dm. Bug B crawls at 20,000mm/d and goes 5,000mm. Which takes less time?

?

Speed - Which is Less Time - Changed Both Units Worksheet

Mobius Math Club logo
Math worksheet on 'Speed - Which is Less Time - Changed Both Units (Level 2)'. Part of a broader unit on 'Speed, Distance, and Time - Advanced' Learn online: app.mobius.academy/math/units/speed_distance_time_advanced/
1
Bug A crawls at 10cm/min and goes 40cm. Bug B crawls at 0.001m/s and goes 0.3m. Which takes less time?
a
Bug A
b
Bug B
2
Bug A crawls at 7.5dm/hr and goes 30dm. Bug B crawls at 20,000mm/d and goes 5,000mm. Which takes less time?
a
Bug A
b
Bug B
3
Bacteria A moves at 4.29mm/min and goes 30mm. Bacteria B moves at 0.5m/hr and goes 0.05m. Which takes less time?
a
Bacteria A
b
Bacteria B
4
Bug A crawls at 3.33dm/min and goes 20dm. Bug B crawls at 0.00007hm/s and goes 0.03hm. Which takes less time?
a
Bug A
b
Bug B
5
Car A drives at 5.71mm/ms and goes 40mm. Car B drives at 3.75m/s and goes 0.03m. Which takes less time?
a
Car A
b
Car B
6
Plane A flies at 4.29hm/s and goes 30hm. Plane B flies at 30km/min and goes 3km. Which takes less time?
a
Plane A
b
Plane B
7
Bug A crawls at 8.33mm/min and goes 50mm. Bug B crawls at 37.5cm/hr and goes 5cm. Which takes less time?
a
Bug A
b
Bug B