Question
(a) Measure the size of angle x.
(b) Measure the length of line AB in millimetres.
(c) Mark the midpoint, M, of line AB.
(d) Draw a line through the point M that is perpendicular to line AB.
▶️Answer/Explanation
(a) $46^{\circ}$
(b) $84$
(c) Mid-point marked $42$ mm along $AB$ from $A.$
(d) Line at $90^{\circ}$ to $AB$ at $M.$
(a) Measure the size of angle \( x \):
1. Use a protractor.
2. Place the midpoint of the protractor at point A.
3. Align the baseline with line AB.
4. Read the angle where line AC intersects the protractor scale.
(b) Measure the length of line AB:
1. Use a ruler, preferably one with millimeters for precision.
2. Place the ruler along line AB.
3. Record the length in millimeters.
(c) Mark the midpoint \( M \) of line AB:
1. Find the midpoint by dividing the length of AB by 2.
2. Mark this point M.
(d) Draw a line through point M that is perpendicular to AB:
1. Use a ruler and a set square.
2. Place the set square’s right angle at point M.
3. Draw a straight line through M, perpendicular to AB.
Question
Measure the length of line $AB$ in millimetres.
▶️Answer/Explanation
Ans: 107
Use a ruler that shows millimeters (mm).
Place the 0 mm mark on the ruler exactly at point A.
Ensure the ruler is straight and aligned with the line segment \( AB \).
Look at the point where point B aligns with the ruler scale.
Record the number of millimeters (mm) at that point.
Question
Write down the number of centimetres in 2\(\frac{1}{2}\) metres.
Answer/Explanation
Ans:
250
Question
The width, wcm, of a carpet is 455cm, correct to the nearest centimetre.
Complete the statement about the value of w.
Answer/Explanation
Ans: 454.5 ≤ x < 455.5
Question
Six donkeys are each given two 5ml spoons of medicine three times each day.
Calculate the number of whole days a 2 litre bottle of medicine will last.
Answer/Explanation
Ans: 11
Question
The total mass of 38 spoons is 1824g.
Work out the mass of 53 spoons.
Answer/Explanation
Ans: 2544