Time, scales and measurement problems
Answers are for parents and teachers.
1
Change 5 h 10 min to minutes and 4 minutes to seconds.
5 × 60 + 10 = 310 min; 4 × 60 = 240 s.
2
A train leaves at 9:45 a.m. and arrives at 12:10 p.m. How long is the journey?
9:45 to 10:00 is 15 min; 10:00 to 12:00 is 120 min; 12:00 to 12:10 is 10 min. Total 145 min = 2 h 25 min.
3
Measure 8 spoons or pencils in cm and make a line plot with a key. Which length is most common?
Any correct plot with exactly 8 dots, a title and a key.
4
A truck carries 8 boxes of 125 kg each. What is the total mass in kg and in tonnes?
125 × 8 = 1,000 kg = 1 t.
5
A bottle holds 1 L 500 mL. How many 300 mL cups can be filled from it?
1,500 ÷ 300 = 5 cups.