Math 1A Singapore-Comparing Length-Chapter 8.1
Comparing Length
Know comparing Length:
Look at the picture and give answers as per questions.
Who is the longest?
Who is the shortest?
Answer:
Mr. Snake is the longest.
Mr. Ant is the shortest.
Who is the tallest?
Who is the shortest?
Answer:
Miss Giraffe is the tallest.
Mr. Monkey is the shortest.
1. Which is the longest string? Which is the shortest string?
⬤.⬤.⬤.⬤.⬤.⬤.⬤.⬤.⬤.⬤
[Note: 1st string has 10 balls, 2nd string has 9
balls and 3rd string has 11 balls.]
Answer:
3rd string is the longest.
2nd string is the shortest.
2. Which is the tallest block? Which is the shortest block?
[Note: 1st block has 4 bricks, 2nd block has 6
bricks, 3rd block has 7 bricks, 4th block has 8 bricks.]
Answer:
4th block is the tallest.
1st block is the shortest.
3. Which worm takes
the longest path? Which worm takes the shortest path?
[Note: Worm A takes 9 small square sides, Worm B takes 8 small square
sides, Worm C takes 10 small square sides.]
Answer:
Worm C takes the longest path.
Worm B takes the shortest path.
4. Which tape is the longest? Which tape is the shortest?
[Note: Tape ‘P’ takes 6 small distances, tape ‘Q’ takes 5 small distances and tape ‘R’ takes 6 small distances but ‘R’ takes an angular way.]
Answer:
Tape R is the longest.
Tape Q is the shortest.
Workbook Exercise 57(1)
Fill in the blanks.
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(a) Tape ____ is the longest.
(b) Tape ____ is the shortest.
(c) Tape D is as long as Tape _____.
(d) Tape A is shorter than Tape _____.
Solution:
(a) Tape C is the longest.
(b) Tape B is the shortest.
(c) Tape D is as long as Tape A.
(d) Tape A is shorter than Tape C.