Q1: Two ribbons are placed side by side. Ribbon A is longer than Ribbon B. How can you clearly show which ribbon is longer without measuring with numbers?
Ans: I will keep both ribbons together from one end. The ribbon which goes farther is the longer one.
Q2: Riya measures a table using her handspan and gets 8 handspans. Aman measures the same table and gets 10 handspans. Will both measurements be correct? Give a reason.
Ans: Yes, both can be correct because Riya’s handspan and Aman’s handspan are not the same size.
Q3: Which tool is most suitable to measure the length of a classroom wall: pencil, handspan, metre rope, or eraser? Explain why.
Ans: A metre rope is best because the wall is long and the rope can measure it easily.
Q4: A table is too heavy to move near the classroom door. How can you check whether the table can pass through the door without lifting it?
Ans: I can measure the table and the door with the same rope and then see if the table is wider than the door.
Q5: Measuring a saree with a pencil takes a long time. Why is a metre rod or metre rope better?
Ans: A metre rod is longer than a pencil, so we can measure big things faster.
Q6: A rope is exactly one metre long. (a) What will be its length if folded into two equal parts? (b) What will be the length of each part if folded into four equal parts?
Ans: (a) Each part will be half a metre. (b) Each part will be a quarter metre.
Q7: Write the names of two objects for each category.
Ans:
Less than 1 metre: pencil, book
Equal to 1 metre: metre rope, table height
More than 1 metre: door, blackboard
Q8: Estimate the length of your classroom desk in metres. How will you check whether your estimate is close?
Ans: First, I will guess the length. Then I will measure it using a metre rope to check my guess.
Q9: “All children have the same height as the length of their arms stretched out.” True or False. Give a reason.
Ans: False, because every child is different in height and arm length.
Q10: Four children jumped from a start line. A jumped more than half a metre, B less than half a metre, C more than one metre, and D less than a quarter metre. Who jumped the farthest and who jumped the shortest?
Ans: Child C jumped the farthest and child D jumped the shortest.